Pulling a Halo

The act of launching a land vehicle, landing it right side up while being intact, and losing total control over where it goes. (Losing total control includes having unexpected outside forces causing a major change in motion.)

WOAH, his Jeep was pulling a Halo!

Pulling a Halo

The act of randomly falling asleep while in the middle of an an activity; usually while chatting, voice chatting, or playing an MMORPG.

"Oh man, our healer is just standing there! I think she's pulling a halo again!"