Top Definition
gast is the welsh translation of the english word 'bitch'
ma chwaer ti yn gast cont
by Hywel August 23, 2004
When one is being extremely gay
Boy you need to quit being so Gast and hit on some bitches
by Ryan September 12, 2004
State of being FARTED upon by an extremely obese man.
Shit! I just got gast on by Rosie O'Donnell!!
#gast #gassed #ghast #aghast #gas #fart #shart #fatass #rosie o'donnell
by Dave96 August 24, 2007
A man with a rather large stomach
Check out the gast on that guy!
by Andrew October 06, 2003
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