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1.
An abbreviation for "shit my pants laughing so hard".
First seen by Jason "Mayhem" Miller's tweet.
A: Man, I just smplsh!
B: What? That doesn't make any sense!
A: Yes, it does, it means "shit my pants laughing so hard"!!.
B: ... who'd even come up with something like that :/
by MelEnt June 24, 2011