1. n. intestinal gas.□ The baby has gas and will cry for a while longer.□ I’m not too well, but I think it’s just gas.2. n. nonsense.□ All we got in class today was gas.□ Hey, that’s about enough of your gas.3. in. to talk nonsense; to brag. (See also gasbag.)□ Pay no attention. She’s just gassing.□ Stop gassing for a minute and listen.4. in. to have a good time.□ We gassed all evening.□ Let’s go out and gas tonight, how about it?5. AND gasser n. a joke; a prank; a wild time.□ The party was a gas.□ What a gas! I had a great time.6. n. liquor, especially inferior liquor.□ You want some more gas?□ Pour me a little more of that gas, will you?7. AND gas up in. to drink excessively; to get drunk. D Let’s go out and gas up!□ I come home every night and find that you’ve been gassing all day.
Dictionary of American slang and colloquial expressions. 2015.