Tom: Bro, It's Act Up October and Stacy is making me fucking act up.
John: Yeah, she making act up too.
John: Yeah, she making act up too.
by HoodedWhiteCrewmate October 8, 2020

Person 1: Don't make me go Hamilman act 2 on you
Person 2: Neverrrrrr
Person 3: Unless I Do it first.
Don't make me go Hamilman Act 2 on you...
Person 2: Neverrrrrr
Person 3: Unless I Do it first.
Don't make me go Hamilman Act 2 on you...
by peanutbutterrat_777 February 11, 2021

The act of a parter/lover pissing on the roof of your mouth while you beat your shit to gay midget pornography. After the first stage of the act the man proceeds to chop his penis off and hang it on the wall.
by Skibitidesawn November 24, 2024

Someone that acts tough but really ain't, or someone that acts like a depressed asshole for no reason, or someone that just acts like a bitch generally
by buttfart33 September 25, 2025

It is a simple thing, every 10th of each month, we do a gender swap, boys act like girls, and girls act like boys, easy right? Wring the boys wll have a tough rule, they have drama to deal with, complaints, have to do their nails, have to look pretty for their boyfriend, boys get an easy one which is pee, poop, work, and sleep while we have periods.
Oh hey its Act like a Girl/Boy day
*Turns into a girl* OH MY GOD JUST SHUT UP TYLER, NO ONE LOVES YOU... MY GOD BOYS ARE STUPID *One month passes* Hey boy wanna date?
Oh hey girlllll its time to act like a boy now! Nah, ima pee, shit, work then sleep.
*Turns into a girl* OH MY GOD JUST SHUT UP TYLER, NO ONE LOVES YOU... MY GOD BOYS ARE STUPID *One month passes* Hey boy wanna date?
Oh hey girlllll its time to act like a boy now! Nah, ima pee, shit, work then sleep.
by GreatBaconGamer June 1, 2018

When you are the buzzkill of the party - taken from the character Karl from the show "An Idiot Abroad."
Also a curmudgeon.
Also a curmudgeon.
Ex:
David - "Let's go steal some Christmas lights."
Dorothy - " I don't want to. I don't like jail. It's illegal. I have a mortgage."
David - "You are acting a Karl in what could possibly be a fun situation."
David - "Let's go steal some Christmas lights."
Dorothy - " I don't want to. I don't like jail. It's illegal. I have a mortgage."
David - "You are acting a Karl in what could possibly be a fun situation."
by Sydney Coles June 11, 2012
