Top definition
verb: To start shitting in a public restroom after someone who is already in there shitting, and to finish and leave before they are even out of the stall.
Person 1: I was in the john taking care of business, when somebody busted into the stall next to me, dropped trow, and started makin' ass trumpets like you never heard before. Craziest part about it, he was done, cleaned up, and outta there before I was even ready for paper.

Person 2: You got shit lapped, bro.
by honkus mcduck December 19, 2008
Get the mug
Get a shit lap mug for your grandma Yasemin.