machine bum

Usually associated with consuming large quantities of semi-undigestables, such as corn or peanuts. The effect is a rapid-fire rectal discharge of the consumed food(s); often accompanied by diarrhea, accentuating the percieved effect.

"We had a great time at the picnic! There was lots of corn on the cob, but the next day I had a major case of machine bum!"

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