gassed up

gas up

1. To put gasoline into a vehicle, especially to fill the tank to capacity. You should gas up before hitting the road.
2. slang To drink alcohol to the point of intoxication. The guys are down at the bar gassing up before the game.
See also: gas, up

gassed (up)

mod. alcohol or drug intoxicated. Fred is gassed up and very wobbly.
See also: gassed, up