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2.
This is when a beat contains so much force it is said to be like somebody stepping on leprechauns. Yes, leprechauns are little, but it would take quite the impact to crush them to the floor all the same. The stomping force creates vibrations so you can feel it across the room.
Boom Boom Pow by the Black Eyed Peas
"beats so big i'm steppin' on leprechauns"
by hautboiss January 03, 2010
 
1.
(v); mentioned in the black eyed peas song "boom boom pow", is the act of tripping on mushrooms. People who injest this drug are prone to see odd characters, such as leprechauns.
"Man, the other night I was steppin' on leprechauns..shit was insane!"

"I would rather be steppin' on leprechauns tonight than get drunk."
by lilkmo July 08, 2009
 
3.
A way to refer to a person stepping or trampling on your shoe(s). Used especially if the shoes are new. Made famous with the popular Black Eyed Peas song: Boom Boom Pow. all credit goes to them
"C'mon man watch out, you're steppin' on leprechaun!"

"dude i was steppin' on leprechaun in that mosh!"

"you step on leprechaun, i step on your face!"

"Beats so big im steppin' on leprechauns" -Boom Boom Pow
by Skwiggy June 07, 2009