bark busters 

Plastic or metal hand guards on dirt bikes that protect your hands from hitting objects such as trees, bushes, cactus, rocks flying at you from your buddy's rear tire.

If not for my bark busters I would have broke all my fingers from the rocks chuck sent flying at me when he twisted the throttle.

bark busters by David J. L. December 14, 2008

bark buster 

Another name for a 2 litre bottle of cider. Seems to have originated in Northern Ireland. Usually drunk by underage drinkers who can't afford anything else to drink.

I managed to scrounge £2 of my ma for a bark buster tonight. I'm gonna drink myself unconscious.

bark buster by Limbodancer November 4, 2018

barkbusters

Found commonly on motocross/offroad motorcycles, barkbusters are hand and lever protectors attached to the handlebars.

Barkbusters are great protection for your hands from hitting trees in an accident.

barkbusters by Scottds80 August 8, 2006