A penis that splits, having two ends.

Siamese Eel refers to a rare sex act with a man that has two penises. The 2nd penis can be either natural, as in the popular Reddit post where a man with two functioning penises created an Ask Me Anything, or artificial.

The term was recently popularized in the show Schitt’s Creek where the character, Moira Rose, feared her series of “tasteful nudes” were leaked on the internet. One of the search terms of the photos were Siamese Eel.

When your spouse or partner is sitting on the toilette peeing or pooping, the other person sits on top and poops through their partners legs.

The act of 2 persons performing a squat while using each other as back rests (back to back) in order to mutually pass fecal matter. To ensure success lock arms. The ultimate act of trust.

When you are being cock-blocked so hard by a girls friend that she doesn't leave her side the whole entire night.

Guy: Yo, did you get with Emily last night?
Me: No man, she was siamese-twinning with Lily the whole time.

The act of having sex with two elderly women whose skin have the texture of a handbag.

two or more black people that always repeat the exact or almost all of the all of the sentence the previous one said. This pertains to jokes as well.