Sort of like saying something is "cool". Originated in Raffles Institution circa 2021, entered the general lexicon in 2022.
Variants include sad gas, gone gas, rad gas and bad gas. You can also add gas to the end of your sentence to give it a gas quality.
"I finished my whole chem tutorial" "mad gas bro"
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An expression (traced to the skateboarding community of the early 1990's in Syracuse, NY) expressing the possession of particularly unattractive facial features.
Sam: Are you gonna call up that girl you met yesterday?
A-dog: Nah son, she had mad gas on the grill.
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