Arse Amplifier
A Toilet: because of echo made when you involuntarily fart while in the sitting position.
Nick: Jeez, that curry was a hot one last night, I think I'm gonna go play some tunes on the Arse Amplifier
James: Don't sit there too long, you may get a dose of Bog Leg
James: Don't sit there too long, you may get a dose of Bog Leg