Quagmire's Mom

"Quagmire's Mom" is the tenth episode of the thirteenth season of, and the 241st episode overall. It first aired on February 8, 2015.

Synopsis
"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 (guest star Allison Janney)."

- The Futon Critic