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1.
v: to fill another's head with false notions
She was all gassed up, so when she didn't win promqueen she was salty.
by George February 02, 2004
 
2.
to lead on. to play someone.
this bitch got me gassed up cuz she aint into me.
by Caca Man March 16, 2004
 
3.
To inflate somebody's ego via compliments, praise, or actions.
When the ego of a person is self-inflated.
Having too high an opinion of oneself when in actuality, it is unwarranted.
Don't gas up this idiot!

I would tell him he has nice eyes but I don't want to gas him up. He knows he's good looking as it is.

Amanda has almost 100 likes on her new Facebook profile picture and it totally gassed her up! Now she thinks she's hot shit.
by blattyblattybla September 13, 2013
 
4.
when some1 is walking or driving really slow and your annoyed
hey dj wanna gas up?
by yeah ok.like id say my name May 09, 2006