To completely go overboard with the aid of alcohol. It may also include alienating your friends through your actions or screaming the names of past flames from the rooftops of the city.
"Fuck me, bro. I really shouldn't of gone Full Sando last night. Now I have to deal with the consequences of my actions"
by TheFullSando November 4, 2022

by Matt_the_Throttle June 1, 2025

an older(35-50)year old guy working a high pay white collier job whos never ridden a motorcycle that's trying to be cool by buying a top of the line Harley or BMW bike with over $2000 worth of factory gear
by dixe normas June 5, 2021

When one speaks to you with a lisp and you cannot decipher a word that they say. Or when a person spits uncontrollably and has a lisp. It is permissible to yell "vaseline" with a lisp and cut one of these lispers off.
Man, that guy with a lisp was talkin with a mouth full of vaseline. What the hell was he talking about?
by babypiratesnapchat2 June 24, 2023

When you fuck over your shift trades by making them go on the medic; Treating your trades like shit; Ensuring you can never find shift trades again by putting yourself first.
"I didn't want to be tired for my vacation so I put made him do my medic night....had to go Full O'Callaghan on him"
"Fuckin' guy went Full O'Callaghan on me and made me ride the medic for him, I'll make sure the boys don't take shifts for him ever again."
"Fuckin' guy went Full O'Callaghan on me and made me ride the medic for him, I'll make sure the boys don't take shifts for him ever again."
by BigBert69 April 10, 2024

Girl: My cat sat on my pillow “full coin down” and left a gnarly streak.
Guy: That’s fucking disgusting!
Guy: That’s fucking disgusting!
by Sad cat owner February 9, 2024

My mom: I'm about to give that asshole an ear full!!
Me: an ear full of what?
Mother: An ear full of pissed off mom!!
Me: an ear full of what?
Mother: An ear full of pissed off mom!!
by Froody foozboos pizza June 25, 2015
