Top Definition
to get really high; super baked off your ass; to have smoked so much marijuana that you in fact believe you're slapping a leprechaun everytime you take a hit.

slapping the leprechaun in the face would mean you have the first hit.
slapping the leprechaun in the stomach or chest would be taking hits in between the first and last
slapping the leprechaun in the butt would mean taking the last hit of that bowl, joint, or device you're using to smoke out of.
-hey, let's "slap the leprechaun" tonight
-i'm so down!

-aye waadddup
-nothin much, just slapping the leprechaun
by 3LEMONS December 11, 2010

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