1. (US) energy, determination, aggression; also attrib.
|Life Its Ownself (1985) 15: I, me [...] your basic, all-pro immortal, was expected to go out there every Saturday and crack open a 220-pound can of whipass.|
|Pound for Pound 56: ’Bout time t’open up a can a whip-ass. [Ibid.] 121: This Chicky-dickie a whup-ass Messkin boy who will fight.|
2. a beating.
|Wire ser. 4 ep. 1 [TV script] Give ’em a whip-ass they aint never gonna forget.‘Boys of Summer’|
to assault, to beat up.
|College Sl. Research Project (Cal. State Poly. Uni., Pomona) [Internet] Bust open a can of whoopass (phrase) To prepare to beat someone up/get really angry after they’ve done something appalling. (Usually meant as a joke between friends.).|
|Source Oct. 120: He even opens a can of whoop-ass on a bigoted cop.|
|Teen Lingo: The Source for Youth Ministry [Internet] open up a can v. (derived from ‘open up a can of whoop-a_ _’) To take an action of enforcement. To punish or hurt.|
|Mad mag. Dec. 9: I’m going back to Mustafar to open a molten hot can of whoop-ass.|
|Generation Kill ep. 4 [TV script] At oh-dawn-hundred tomorrow the Navy’s launching some precision-guided whup-ass.‘Combat Jack’|
|Twitter 2 Aug. [Internet] Watch Journalist, Dr. Sarah Kendzior, Open A Can Of Whup-Ass On A Breitbart Editor!!!|