tripping black 

in the process of getting stoned on a hard substance such as meth

Johnny is on the couch, tripping black.

tripping black by Romi6473 April 11, 2007

tipping one back 

Having a drink; tilting your head backward as you raise the bottom of a beer glass towards the ceiling so as to finish the last few drops.

"I'm looking forward to tipping one back with you as soon as these negotiations are over."

tipping one back by jbbmoc January 7, 2014