derfjack 

A sexual act of pleasure; to cut open the chest of another male and make love to the vital organs.

He was afraid to go to the beach all summer, afraid that everyone would see the scar from his horrible derfjack.

derfjack by Derf Monster August 2, 2008

Derpjacking 

When a conspiracy hyped, ALL CAPS typing person posts an unrelated article on a thread with intent to garner interest to his/her cause.

Person A: "I love this meme." *Posts picture meme about grumpy cat being grumpy to life*

Conspiracy Derp: "DON'T SAY YOU WEREN'T WARNED!!! RED ALERT: EMERGENCY ALERT: Soldiers warn of coming gun confiscation and war against patriots." *Posts link to infowars.com video*

Person A privately messages friend: "Dude, I just became a victim of a recent derpjacking." *Posts screenshot*

Derpjacking by CRLGer December 30, 2013

Derflack 

Derflack is a specimen of garbage. A Derflack will only piss in litterboxes. When interacting with a Derflack it will usually burst out saying: “A Rat!” Does not have emotions and frequently murders innocents. Is unfunny.

That guy is so unfunny! Must be a Derflack.

Derflack by joemommahahafunny July 4, 2019