(US black) to straighten one’s hair.
|[instrumental title] Gassin’ The Wig.|
|Jives of Dr. Hepcat (1989) 7: Well I guess I’ll ooze on down to the crib and get on the beam for the hop tonight. I’ve got to take a rub down in water and you must believe l’ve got to gas my moss.|
|‘Willie the Pimp’ [lyrics] I’m a little pimp with my hair gassed back.|
|Runnin’ Down Some Lines 241: hair, conk/fry/gas/press (one’s) Straighten one’s hair.|