placostamus 

A prefix for a vegan's first name as a descriptive of his/her eating choices. Not to used as a dis, but a term of endearment.

placostamus mike is on his way to tofu king for lunch. or - Placostamus Zack likes to eat gack.

placostamus by Teddy Teligincia July 23, 2003

Plecostomus 

A woman whose vagina smells like fish, and sucks a lot of dick.

I'm not saying she's a whore, but her mother was a plecostomus.

Plecostomus by Hazerdous August 13, 2016