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To shove an object (often phallic) into a person's bottom in a playfully manner while they still wear pants.

No penetration is necessary. It is simply a friendly assault on a friend's bottom.

Also exclaim "Smoid!" while performing this action.
Darren was bending over tying his shoes so I yelled 'SMOID!' and shoved a cucumber in his ass. He wasn't too pleased...
by Roger_Rammjet March 10, 2011
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