mega-rrhea 

diarrhea that is so powerful, explosive, and often times painful that it breaks all normal standards of fecal expulsion.

"I drank 30-pack of beast ice last night and boy do I have mega-rrhea"

mega-rrhea by jenn December 10, 2004

Menarrhea 

The common phenomenon that occurs when women get diarrhea during menstruation.

Lyndsey said "Nikki can't go for Mardi Gras tonight because she has a bad case of Menarrhea"

Menarrhea by Eric Matthew October 26, 2022