low key jibber Share definition Flag a joint of marijuana that is smoked without telling friends, as to get more weed to yourself. "Ey bro lets get in a low key jibber just me n you, dont tell rob, his fatass will bogart the J." low key jibber by Dane Galeesak July 3, 2008 0 0 Get merch Get the low key jibber mug. Buy Now — $32.95 See more merch