Abbreviation for either of the following:
Just Chilling
Jesus Christ
Jersey City

shortened for "Just curious"

often used in instant messages and texts.

A term commonly used for when a person is to kill a joke or say something incredibly stupid. Being "JC'ed" causes complete embarrassment to yourself and the people around you. Always remember to think before you say something dumb as fuck.

Joint cruise, when you cruise around the coolest spot in your city and smoke a joint.

JC is an acronym for "Just Chilling". Can be used as an adjective or a verb. Used in the verb sense, it means that you are just going along for the ride, or just hanging somewhere. In the adjective sense, it implies someone who is calm and collected all the time, and who never gets upset about anything.

JC!(Jiminy Cricket) is used by people to express the word "Oh My God" (OMG), because we all know how boring OMG can get, so just use JIMINY CRICKET!

Verb (from the noun Jennifer Chan):

1. The act of killing someone on a bottom bunk, caused by collapse of the bed from having bed-rocking sex on the top bunk, as in the case the original perpetrator, Jennifer Chan, or as seen on 1000 Ways to Die. This is the opposite of a dormgasm experience.

2. To kill someone in an equally gruesome (or humorous) manner, if not by the method described above, usually preceded by a threat with one's thumb pointed at the potential victim instead of the index finger.