Tag descriptions

Human penis: Mushroom head, frenulum, no sheath
Knot: Any penis with a knot/bulb at the base
Tapering penis: Any tapering / cone shaped penis
Penetration: Penetration is the insertion of a body part (penis, tail, tentacle, etc.), or object (dildo, aeroplane, etc.) into a character's body. This does not include fist/paw/hoof/arm/etc/fingers
Genital slit: Penis protrudes from a slit
Ridged penis: Sharp edged horizontal grooves or protrusions
barely_visible_penis: Posts where the penis is not obvious in the thumbnail, and remains difficult to see when viewing the actual post. This may be due to its small apparent size, being a similar color to the surroundings, or being partly covered up (by anything).
Canine penis: Dog penis, pointy head, knot, some separation between knot and body
Equine penis: Horse penis, long and cylindrical, usually with a ring in the middle
penile_spines: sharp, backward-facing spines protrude from the shaft and head

I have added penetration Reason: If a character penetrates an other one, his penis features are often obscured

Other tags you could enter manually