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It consists of blowing into the receivers anus while firmly grasping the gonads and you can probably guess the boner part, in order to emit a symphony of weird noises.
Man 1: Becky gave me a human tromboner last night

Man 2: that sounds like it was fun

Man 1: yeah she played my ass like a jazz tuba
by Magnumus Dongus August 11, 2018
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