Dad-Fucker 

One (male) member of a group of friends who takes part in raunchy sexual activities with his own father. When left undiscovered, there are many telltale signs to identify the "dad-fucker" within a group. This signs include but are not limited to:

1. Constantly using the excuse "I have a girlfriend" to get out of a situation.
2. Acting excessively gay and/or feminine at all times.
3. Constantly being a huge pussy
4. A strong aroma of Bobo Cheese and asshole emitted from the person's mouth.

When discovered, the accused dad-fucker immediately loses all credibility in any conversation. Any attempt by the accused dad-fucker to offer an opinion or statement can and should be discredited and met with the statement, "shut up, you fuck your dad." Furthermore, when conversation within a group dulls, one can and should immediately offer the exclamation, "You fuck your dad!" Regardless of whether or not this exclamation was funny, all other members of the group should laugh and agree.

And remember, Once a dad-fucker, ALWAYS a dad-fucker.

Dad-Fucker: "I have the grades to get into any Ivy League school."
Non-Dad-Fucker: "No you can't Nate, you fuck your dad"

Dad-Fucker by Russell Hodge March 29, 2011

dad fucker 

mother fucker, but for dads because equality.

short form: df
#feminism

what's up dad fucker?

dad fucker by crl1nsab1tch May 21, 2021

I fucked your dad 

the ultimate diss/comeback nobody has anything to say to it, coined my an lloydminster native Matt Schneider

Person 1: "fuck off dickhead"
Matt Schneider: "I fucked your dad"
Person 1: "uhh..."

I fucked your dad by Fergie55 February 19, 2015

your just pissed becuase i fucked your dad 

The ultimate comeback, used by both men and women, becuase there is abseloutly nothing to say back to it.

Person 1Fuck you, dickhead
Urbandictiionary reader Your just pissed becuase i fucked your dad
Person 1 ....uh....

your just pissed becuase i fucked your dad by George May 2, 2005

i fucked ur dad

the insult of all insults to make any grown man cry
this insult is so severe that it has been known to give people panic attacks and put people in comas, and in some cases even death

todd: how was your day
larry: i fucked ur dad
todd: {instant coma}

i fucked ur dad by lanky nonse 68 September 24, 2021

Dayfucker 

1. One who fucks other people's days.
2. One who fucks other people's shit up, or otherwise causes general mischief.

Did you hear what Micky did to Ron?
Yeah, dude....that asshole was bread to be a Dayfucker.

Dayfucker by stephystranger August 11, 2015