Catfish Smell

When a vagina is either overused or unwashed, resulting in the girl's vaginal odors to ferment with the sweat and rotten semen, thus causing her vagina to smell like fish

Guy: Yo, bro. Stacy's got catfish smell!
Chad: For real, bro? Gnarly!
Guy: Yeah, brah! I told her to wash it but she was busy bitching about body acceptance and stuff.
Chad: Feels bad, broski. Let's chug some Monsters to wash the smell out.