Fucking the dog 

When someone is on the clock (at work) and they stand around acting busy and actually do nothing.

The supervisor approached the crew of ditch diggers and separated the two who had been leaning on their shovels talking. He said that any more inaction on the job would lead to their dimissal. Stating further, I'll have no fucking the dog on my watch!

Fucking the dog by 0verfiend June 25, 2005

fucking liar

Someone who doesn't just lie, but lies about something big and/or important.

He said he wasn't the kind of guy that would have a one night stand. He was a fucking liar

fucking liar by AMTcgy August 18, 2005

fucking slut 

For a person who is deemed sexually promiscuous, Thus being the "ultimate slut".

Driving by a random house and yelling out the car "Fucking Slut!" and then driving away laughing your ass off.

fucking slut by m_j_s December 25, 2007

fucking horny 

sexually aroused to the point of feeling your sexual organs will explode

Diana, those morning videos have got me so fucking horny.

fucking horny by Brettwads June 23, 2021

fucking up hard

to fuck up more so than to simply "fuck up"

Kelsey: Dude, the project is due tomorrow and we still don't have a topic.
Deborah: I don't think we need to meet or pick a topic.
Kelsey: Deborah... you're fucking up hard right now.

fucking up hard by tryin2go2jos March 30, 2011

Fucking Judas 

Quote off of Superbad.

Evan: You really bitched out back there.
Seth: I bitched out? You bitched out! Fucking Judas.

Fucking Judas by ThEcReEpYgUyInYoUrClOsEt July 26, 2009

Fucking your brains out 

Having sex until until fully exhausted

Girl 1 "Henry came home yesterday horny as anything"
Girl 2 " Did you spend your night fucking your brains out?"
Girl 1 " Yep - we went at it all night like rabbits"

Fucking your brains out by Grandal's grammar August 23, 2016