Lapjack 

When attempting to perform a lap dance, and epically failing and appearing as if you are jacking the fella off with your gluteus maximus.

Did you see Briana, giving Aaron a lapjack? Shit was nasty, I'm sure he wanted a refund.

Lapjack by Niggas_in_Etna February 5, 2012

Lipjacking 

Talking shit to someone, trying to start a fight or brawl.

Hey Tim, You got my back? These fools over there are lipjacking me!

Lipjacking by pooter diddler April 4, 2015

lapsack

Man's precious jewels

Man, when i was a kid and sat on Santa's lapsack, it always felt like he was sporting wood.

lapsack by roofdiddla July 19, 2011

Lepjacket 

An irish slang term for a person of low intelligence or someone who lacks common scence

John's a lepjacket.

Lepjacket by Terry O'Neill February 22, 2010