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Accidental mis-routing of a normal fart. Rather than blasting away from the buttocks, fart wraps around through the thighs, resulting in scrotal flappage. Flatulence then exits the front of body. . .
*Laying on back in bed and farting into mattress*

Girlfriend: Oh GAWD!! That stinks... Did you let another Boomerang Fart go?!?"

Boyfriend: *Grins awkwardly*
by A. St James April 18, 2012