simply put: to vomit or throw up.

to chock on one's testicles

Onomatopoeic.
An attitude or situation causing a retraction of the lower jaw, potentialy causing drooling, and the resulting noise. Gawping.
Used on its own to describe a response to a given (stupid) situation.

Vomiting, with a humorous connotation

varient of gurper. from the dungeons and dragons creature called a Gurp. a dorky person.

The act of hitting the front brake handle too forcefully on a bicycle, causing the torso to slide forward and the scrotum to painfully smack the handlebar brace. After the pain subsides, the swelling and purple testicles become a reminder of this careless mistake.

The act of burping into another person, or having been burped into, anally.