Gilda lays Rainbow Dash on her back and helps slip the "magic panties" up the pegasus' legs until they fit snugly into place. Dash moans as the panties cause her groin to tingle and twitch, while Gilda promptly slips the panty crotch off to one side, exposing Dash's femhood and a bulge in the fur above it.

Gilda holds Dash's legs and lines up her erection with Dash's labia, carefully pushing her cocktip inside. A groan escapes her beak as she feels the hot marehood against her cockskin, compelling her to push deeper inch by inch, her eyes staring down at Dash's bulging crotch as it expands into the familiar shape of a ballsac. As the griffon buries her entire shaft into Dash's femsex, another bulge swells above Dash's balls, rapidly forming into the head of a penis.

The griffon pulls her hips back and begins a slow repeated thrusting, the pegasus' cock growing out another half inch every time Gilda hilts her own malehood inside Dash, the flood of hormones through Dash's body making the developing shaft's erectile tissue instantly hard as it grows out of her, bobbing and dripping precum after reaching a few inches in length. Gilda rams her hardon into Dash faster and faster, the pegasus stroking her own new cock as it becomes as large as Gilda's endowment and develops an equine midflare.

The pegasus and the griffon scream in unison as both hit orgasm at once, Gilda pumping her cum into Dash while the pegasus' stallionhood releases its first load onto Dash's bosom and face.

https://avante92artblog.tumblr.com/image/68210074538