2.v. To cover a bitch in garbage and ram her doggy style until she howls.
2. "Dude, my girlfriend still smells like shit from that time two weeks ago when I Junkyard-Dogged her."
2. a particularly vicious and dangerous person
(dogs of such a temperament are frequently used to guard junkyards in movies)
"Yea man watch out, they dont take shit from nobody, not even eachother, oh and i think those two girls with them are bitches."