Smack your hands against your bodyrepeatedly, mainly the torso to chest area, and continue to smack hands on body and say "hambooooniiinngggg" in Rigby's voice from Regular Show.
Rigby: HAMBONINGGGG
Mordecai: No...
Rigby: HAMBONING WILL SAVE YOUR LIFEONE DAY!!!! It'll be like "what! you tried to mug me?"
*proceeds to hambone for 20 seconds*
Mordecai: NO! We're not doing that, okay!? Okay!?
Rigby: Fine...
A cool-ass superpower used to kill 3 burly half naked Aztec men and send the other one flying into space. It also almost killed a gay immortal vampire lord before he cut off his own damn head. It's so beast a nigga can manually break his arm to gum-gum rocket a bitch in the face without pain. Even Speedwagon is impressed.