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1.
A jfd occurs after you have been smoking, preferably marijuana, in your car. You will have been driving around while smoking and then once you are finished, you stop the car, get out, and wipe off any ashes and such. A modified version of a Chinese fire drill.
Leroy: That was a sweet cruise that we just had

Jenkins: I know, all we need is a Jamaican fire drill and we should be all set

Leroy: word
by DJmoist June 28, 2012