Callie: I just flushed my phone down the toilet.
Henry: Ooh, that's rough. SMP.
Callie: Thanks, imma need it :(
by Updated Magic April 24, 2016
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A friendly word that means "slapping my pussy." It's most commonly used when someone says something funny, and you reply "smp"
Cole: Did you know Abby talked shit about us yesterday?
Kaitlyn: She did?
Cole: yeah she did smp
by Fartinmyass69 December 9, 2016
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Standard Missionary Position

...that pretty much sums it up.
She said she preferred SMP...bitch, I like my girls on top.
by lawlercopter111 April 6, 2011
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"shaking my penis", similar to "shaking my head" but simply with a different body part. Used to show disbelief, dissatisfaction or extreme satisfaction about a topic.
Those girls shorts are so damn short, smp
by Davey Crockette November 28, 2011
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Shit My Pants. In rebellion to the absolute overindulgence of LOL in texts, twitter, email, facebook etc, SMP is to be used in its place... If people were laughing out loud as often as they use the term there would be no war, the world may in fact end because no one would be doing anything but laughing out loud. Therefore SMP is to replace LOL. And only to be used if you are in fact shitting your pants.
Over Text Message-
Kristie: OMG I'm at the beach and i farted so loud the ground vibrated and fellow beach goers left bc they thought a storm was coming

Kathyrn: holy shit SMP

Kristie: Literally SMP
by Mollie Connelly August 3, 2009
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Shit My Pants laughing. Due to the overuse and abuse of laughter related, played out texting abbreviations (e.g. LOL, ROTFL, Ha, etc.), the holy grail of laughing, but ACTAULLY laughing is, Shit My Pants laughing. This is elegantly denoted with the anecdote, SMP.
Mike: Oh man, WTF Parker. You banged my mom last night?
Parker: SMP yeah, I was drunk and needed a booty call.
by A.K. FRE$H March 25, 2010
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shit my pants
or
#shitmypants
Danny - "HOLY CRAP. I JUST SAW PARANORMAL ACTIVITY 3."
John - "I ALMOST SMP WHEN I SAW IT."

or
like when tweeting

John - just saw paranormal activity 3!

#shitmypants
by hylander1 October 26, 2011
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