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The act of walking into a group of strangers and dropping a particularly heinous fart, especially humorous when done on an elevator; usually done as a vacation activity.
Example 1:
Jessica: Why's it smell like dead bodies on the elevator?

Terrence: Alex and I were dropping crowd farts the whole way up.

Example 2:
Jon: Why are you drinking all that milk before the concert?

Chris: I'm going to try to set a crowd farting world record.
by MidBoss March 03, 2012