pbro

short for pledge brother (in context to a sorority), in reference to a “brother” who was part of the same pledge class and period

Tiffany: “Oh AJ? yeah he’s just my pbro”
Tiffany’s boyfriend: “yeah..sure”

Pbro

A pee brother. A man that you feel comfortable heading to the restroom at the rave with even when there are some shady figures around. Another man you feel close with, but in a masculine and not romantic way

Yo you wanna meet my pbro? I met him at a rave in socal last month.