The act of wrapping your legs around the top of a bathroom stall and taking a shit. When the shit falls out of your ass and into the toilet it makes an "Atomic Smash"
I'd hate to be the janitor cause I just did an atomic smash in there.
by dr alph January 27, 2011
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Derek: "How did you manage to pull that all-nigher and get an A on that paper?"
Colin: "You know me. Smashing atoms."
by diggitydoggydog November 20, 2011
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