Jacknifing

when you bend a dog in half and stick your knob in its mouth while someone else does it in the poopchute with a strap on. This way you and the other person can rub rusty sherrifs badges.

I jacknifed my collie last night. I think he might of liked it.

by dangerous dave April 13, 2005

Jackinitis

When you go into a Clash Royale slump and lose every game you play in ladder matches.

Example: When you play 2 hours of ladder matches in CR just to lose 200 trophies in the the span of 5 matches.
Person 1: I just lost 3 ladder matches in a row cuh!
Person 2: You must've got a severe case of Jackinitis!

by Deezwheez July 2, 2022