Slangs:
1) result of consuming an abundance of Taco Bell. May require the act of opening car windows.
"Bridget! That chalupa gave you massive gas!"
2) Something really good.
"That is pure gas."
3) of amusement, funny edging into hilarious depending on the position on the gas scale. of irish origin used to describe all things surprising and ironically pleasant
"have you heard her talk? shes a gas one she is"
4) its something to say when someone says something very untrue
5) The title of a book about a humorous, in-depth look at the compulsive disorder and acquisition strategies of many guitarists' drive to own more and more instruments.
"Have you been helped by "GAS"? It won't cure you, but you'll sure feel better after you find out you're in good company"
6) to provoke someone, to irritate them.
"Don't gas me or I'll punch you in the face."
http://www.urbandictionary.com/define.php?term =gas