Size up

To get a feel of someone's strength by observing them or a call out to get someone to fight you

This pretty simple term which was then redefined by tiktok idiots into: When a man looks if his dick will fit by checking out a girl's thighs.

Bro 1: Bro, I fucked your mom

Bro 2: Size up, bitch.

Bro 1: Bet

What tiktok idiots think it is:

Girl: OMG you're so gross, why are you sizing me up?

Boy: Umm... I wasn't. I don't want to fight

by NNatty August 14, 2021

size up

When two men are engaged in a heated argument and it is clear no resolution will be made, one male will say "size up", prompting both participants to expose their penises. The one with the larger penis wins the argument by default simply because his penis is larger. No exceptions.

Male 1: "Dude, you're a fucking dumbass, McDonalds is definitely better than Wendy's."

Male 2: "Um, are you fucking kidding me, Wendy's is 10 times better."

Male 1: "Size up"

Male 2: Alright, fine, McDonald's is better.

by VillanovaJC March 30, 2011

size up

when u measure each others cocks guys

''I'll measure urs if u measure mine'' That would be a size up.

by rw-lad October 8, 2008

Size up

When a guy looks at you thighs to see if he would fit

When you size up you know the bigger the thigh gap, the looser it is

by Toryyuuuu July 17, 2021

Seized up

When you have to shit so bad your sweating and you cant move

"Jake why'd you shit on the ice?" "Well I just Seized up"

by Fat Packer 31 January 9, 2019

size me up

when someone wants to fight you and to basically get on their level; usually said by someone bigger to someone smaller (in height)

boy: I know you aint messin' around with my girl
2nd boy: wanna fight me for it? let's go, size me up!

by private.school.h0mboi February 23, 2011

Size It Up

To compare hand and finger sizes, leading to the comparing of other certain extremeties. This is a command given by one who is insecure about his manhood, and wants to reassure himself that he is as normal as anyone else.

Travis: "Size it up!"
Todd: "Stfu Travis."

by Lee Brody March 11, 2009