Exaggerating something
"Shutup bro your gassin it so hard."
Gassin means lying, possibly joking.
It has replaced the previous word air.
Why you gassin, you never boned her!
1. when someone is spittin fire, dope raps.
2. when you firing a weapon, usually an automatic weapon or a choppa
These are Bay Area definitions
You hear dat track by DB Tha General dat boy was gassin on dat bitch.
When I see dem niggas, ima start gassin fuck these niggas. All dem niggas finna get knocked down.
this mean some 1 is chatin shit
i aint got no money
*stop gassin*
1. A fast rapping rapper spitting all facts.
That new rapper Young Brayzen be gassin' in the booth!
where a group of people cheer on a certain person
the teachers were gassin the talent show