When Liliac was cursed with sex tattoos, his mysterious owners has also inserted a sex-symbiote worm in his cock to make him produce more cum. 

It's useful when Liliac's working his discreet sex-jobs, but outside of it however, it makes everything harder for the spider to keep his horny secrets. This day was one of them.

The sex-symbiote was craving for attention, for cum to be fed into it. Usually satisfied by having a man's penis fucking Liliac's urethra to be fed cum. But Liliac was too busy with his flower shop job. Afterall, his family business take more priority over a horny worm. 

However, even though it is just a worm, it knew how to punish the big spider, to give Liliac so much pleasure while he's working in a public space. Since the symbiote is inside Liliac's balls, all it needed to do was to wiggle and move around inside to stimulate the spider.  Liliac would shiver and grip the counter as he gets an erection. His cock would leak pre from all the pleasure, causing a puddle of pre-cum on the floor. Luckily, Liliac only needed to work behind the counter. Hiding his huge erection from plain sight.

But it still wasn't easy for Liliac. The customers would be confused with the supposedly wholesome spider. They would ask him if he's feeling well and Liliac would stop himself from moaning, saying he's just having a stomachache. A lie he has used often at work so his secret of being a horny slut stays hidden.

This wasn't Liliac's first time hiding his moans while he's receiving pleasure stealthily. To keep his wholesome reputation, he's gotten used to keeping his movements to small fidgeting and panting. So Liliac continued to try and ignore the parasite's stimulation, but the spider has his limits. The discreet arousal has went on for so long that he could feel himself close to orgasm.

Liliac would excuse himself to the customers in line and run to the restroom. Locking the door and pointing his erect fat horsecock at the toilet, ready to pump all his cum out. But the sex worm wasn't happy and it wasn't just gonna let Liliac cum and be done. No, it wanted to punish Liliac even more for holding on so long. 

The long parasite would squirm its way through to Liliac's urethra. At the tip of his horsecock, the worm would knot itself, intentionally self-plugging Liliac's cock-hole. The spider would feel his cum going out his balls and supposedly out his cock, only for him to groan from pleasure as the cum would stop at the tip of his cock and go back into his balls. This would make Liliac pant heavily in pleasure, as he feels like he's in a constant never ending orgasm. A rare stimulation of having the cum go back and forth from his cock and balls.

But that wasn't all, the worm knew about Liliac's cursed tattoos, and it knew how to activate the ones on his dick and balls. The tattoo's effect triggers when cum is pumped inside his urethra, past the base of his cock. When that happens, the balls and cock tattoos glow, signaling its activation. Normally, other people's cum being pumped into his cock would cause his balls to grow bigger to produce more cum.

However, it has an unintended activation that the owners who made these curses didn't plan, but still kept on the spider. When it's Liliac's OWN cum triggering the tattoos, BOTH his dick and balls grow, producing even more cum that usual, with a larger amount of pleasure. 

The parasite knew this and wanted to punish Liliac with this. Not only would Liliac feel even more stimulated, his balls would also grow fuller and saggier, reaching past his knees, full of potent and dense cum. His already large dick would grow even bigger and thicker. His growing cock touching the floor and walls as it makes the small restroom tighter for the spider.

It gets worse for Liliac despite all that. Since the worm is still plugging his cock, his own cum would continue to go back and forth from his cock and balls. This punishment, causing him endless re-activations of his cursed tattoos. Every minute would grow his dick and balls by a millimeter. Endless heavenly pleasure, endless growth.

Liliac would be a moaning mess, and if he doesn't find a way to satisfy the sex-parasite, his mind will break from all the pleasure, leaving him a mindless horny drone, and genitals so big that he can't hide it. He needs to feed the worm someone's cum, but that would mean having to walk out the front door in-front of so many people. With how huge his cock and balls has become, it'd be impossible for his pants to hide it.

Liliac has to find a place to hide his huge cock. The only place he can think of is his ass, to bend his cock to insert it in his own asshole. But then he runs the risk of having a big bulging belly, and a lot more problems. After all, cumming inside his own ass will impregnate himself because of the cursed tattoo on his belly.

The troubled spider doesn't have much time to think, as the door to the restroom has a male customer who needs to use the restroom. Liliac starts having a hard time thinking of how to hide and retain his wholesome public reputation. Liliac's excuses falls short as the customer would be curious with the purple glow coming from the cracks for the door. Unluckily for the spider, the lock was broken this entire time. 

The door clicks open, and the man sees the sex-cursed spider being a moaning mess, with a huge growing penis almost bigger than the man and Liliac himself. Whether Liliac is lucky or not however is hard to tell, as the customer would close the door with a smirk. Liliac would gain another new mysterious owner that day, another man that blackmails him. Saying he can keep the spider's horny secret at the cost of Liliac being his personal slut.