Oral_penetration seems like a no-brainer for most of them, but what about gender-relevant penetration tags, such as <gender>_penetrating? If a male is sucking himself off, do we tag that with male_penetrating_male, or just male_penetrating and/or male_penetrated? The same question applies for other genders that can have a penis.

komuros said:
If a male is sucking himself off, do we tag that with male_penetrating_male

Reminder this implies male/male
penetration wiki says If the character is penetrating themselves, use autopenetration or autofellatio.
The gender-specific penetration wikis such as male_penetrating also specify it has to involve another character (but _penetrated can be solo with an object), though I notice there are currently 24 results for male_penetrating penetrable_sex_toy solo

magnuseffect said:
Reminder this implies male/male
penetration wiki says If the character is penetrating themselves, use autopenetration or autofellatio.

Ah, I had forgotten about autopenetration. Still might be useful to have something like male_penetrating_self and the like for other penis-endowed genders.

komuros said:
Ah, I had forgotten about autopenetration. Still might be useful to have something like male_penetrating_self and the like for other penis-endowed genders.

I'd imagine in most cases here you can isolate/exclude posts well enough using the gender tags.