Based on the Netflix show 'Big Mouth' one of the characters masterbates whilst on a sleep over at his friend's house. To big mouth someone is to masterbate at at a sleep over when others sleep.
Finn: "I know you big mouthed me last night..."
Daniel:"Omg! I thought you were asleep I'm so sorry... I was just so horny."
Daniel:"Omg! I thought you were asleep I'm so sorry... I was just so horny."
by ScruffyNuffy July 2, 2018
by Fortnite is a game??? October 6, 2018
His ex-girlfriend told everyone that he had a small penis. When he found out, he just said that she had a big mouth.
by yorrick hunt January 24, 2008
When a person talk too much, they have a big mouth.
That little boy has a big mouth.
by kame63 June 30, 2011
by finnlvr3 June 4, 2022
the worst show ever to exist which for some reason Netflix has pumped out SIX SEASONS WITH MORE TO COME and cancelled SEVERAL REALLY GOOD SHOWS AND I HATE IT I HATE IT I HATE IT I HATE IT-
someone who talks a lot
someone who talks a lot
by bigmanjerry October 16, 2023
by WhoDatFreshBoi October 12, 2018