The act of inserting a potato into the rectum, typically as a practical joke between friends. It's especially effective if your friend or coworker has a strong urge to defecate, as the extra pressure can send it hurtling out at high speeds, making for a great laugh.
Yo, did you see Carl give Jeremy an Irish wedgie last light? When he farted he shot the spud out so fast it turned into mashed potatoes!
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