The act of
punching a hole in
the bottom of a beer can with simply one's thumb in order to obtain a perfect opening to shotgun said beer.
An expert lapping would entail using ones lower canine tooth to pierce the top of the just
shotgunned beer and tear off the cap of the beer.
"I want to shotgun! who has a key?"
"We dont need keys, Dan's lapping the beers for us!"
"Hey, guys! I just lapped my
first beer!"
"Wow, I'm drunk. I just got dont lapping about 6 beers
in a row."
"How did
you do that!?"
"I just lapped it"
"He can lapp beers!?"
"yeah he's a lapper!"