Fuck Knuckle

The second knuckle of any digit when inserted into an orifice in a sexual manner.

I was fingdipin' this girl to the fuck knuckle after the baseball game the other day.

by elcapitandeganja October 18, 2013

Fuck around and find out

See: the scientific method.

'Please welcome the recipient of this year’s Nobel Prize. His groundbreaking work has stunned the world, defied expectations, and rewritten the rules. Tell us—how on earth did you arrive at this ?
'Fuck around and find out!'

by Jammosito May 14, 2025

dumb fuck

When someone is acting dumb and is stupid

Boy: wanna go swimming?
Girl: it's in the middle of winter you dumb fuck

by xxbabezxx May 22, 2015

Dirty Fuck Stick

Huge penis, that has several disseases

I had sex with jess, and i went to the doctor's because of his Dirty fuck stick

by Jizz jojo August 5, 2011

cum butt fuck

What you call a fugly half bald ginger who is a lazy little bitch and doesn't know how to do their job.

Bob Guy is such a cum butt fuck, he won't teach me how to do calculus.

by gnatosaurus.rex October 15, 2018

Fuck up

Person that destroys their social life with an unfortunate event they regret so very much

Person A: Dude, yesterday I made out with my best friends in my bday party bc we’re gal pals and now I can’t look at them in the eye
Person B: You’re such a fuck up

by imsorrymom May 27, 2019

Fuck boi

Jonathan Abele

Jonathen is a fuck boi

by Bodybagger78 June 16, 2016