To catch a large fish. The word comes from the slapping action of a fish as its being reeled in. Bass, Tarpon, Snook are all known for "slappin" the water as you pull them in.
"Man we were slappin' today. The bass must've been hungry"

"(Insta pic) Great day on the lake #slappin #killemandgrillem"
by killemandgrillem69 October 16, 2013
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reference to a cool item of clothing, somthing that someone has done that is particularly sound, or anything you want it to mean. it comes from the BENglo-Saxon word 'Slah-pin' which means "cradle of the dusty rat".
d00d, that is totally fuckin' slappin!!
by Ben Holt June 14, 2004
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That soup we made in class today was slappin!
by provider March 13, 2016
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(noun) it's the newest smack talk code in middletown, ct
As PGRAB walked by, SCUB was so slappin all the way down the hall. Little did PGRAB know that SCUB was trash talkin her. SCUB was slappin', aka talking smack in code.
by ENRICApole March 18, 2009
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Another term for jerking off, you know walking back from class and finding your roommate jerkin it in your dorm room.
Yesterday I came back from Organic Chemistry and walked in on Johnny slappin paps...
by CPB223 January 23, 2012
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The act in which two bootylicous women interlock their spread legs and grind their vaginas together to stimulate each other's clitoris to orgasm. Often done by lesbians.
Allie: Hey bri wanna come over and slap cats today?
Brianna: Sure I'll bring the lube.
*commences slappin cats*
by The catslapper August 23, 2011
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Here's how 'slappin' the bag' works: Obtain boxed wine. Open the box. Take out the bag of wine. Have a friend hold the bag up for you at face-level wherever that may be. Put your lips up on the spicket and open the valve. Suck/chug the nectar until you've had a respectable portion. Close the valve. Take your face off the spicket and give that naughty bag a slap like you mean it. Then take and hold the bag for the next person. GET BLASTED.
"Whose turn is it to slap the bag??"
"...yours!"
"Sweet. someone hold it for me"
...
*SLAP*

OMFG I LOVE SLAPPIN' THE BAG!!!!!!!
by harrebawl July 15, 2011
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