Quagmire’s Mom is episode 10 of family guy season 13. It was originally aired on February 8, 2015.

Lois takes Peter to open a checking account, and they discover that his first name is actually Justin, which Peter adopts as the name of his younger “bro”-style alter-ego. Then, Peter/Justin throws a party, during which Quagmire unknowingly gets into some trouble with his mother.