Basically chilling, relaxing, sleeping or doing whatever you want without stress and pressure.
British Person: Alright mate?
Normal Person: Hey, I'm not feeling too good right now.
British Person: Bro you gotta start jaering. Chill yourself!
Normal Person: Alright, I'll try.
Making yourself seem like the bad guy at the benefit of everyone involved in the situation.
I need to end it with this girl but I don't want to tell her, I'm just going to have to Eren Jaeger it.
*Proceeds to make himself seem like an asshole until she ends things with him first*
Eren Jaegering it.
i was walking into the lockerroom to get my sportsgear when i saw my girlfriend giving head to a teacher while taking it in the ass by the principle so i mummbled "You Jibbering Box A-Cookies" and backhanded that bitch in the face.