Definitions by shes real effed

diah 

an abbreviation for diarrhea. Commonly ended with a long h sound to emphasize how weakening and gross it is.

Teddy: oh my god, worst diah of my life last night!
Rafi: I hate diahhhhh!
Teddy: i get it soooo much
Rafi: i know you're fucked!

diah by shes real effed July 7, 2010