leg hound
1. a male dog the humps your leg
2. a young man with a powerful sex drive that will fuck anybody, anything, anytime, anywhere.
1. What could be more awkward than meeting your girlfriends parents with their damned leg hound humping and nutting on your shin.  

2. Jesus Shawn! I can understand fucking an fag-hag like Jamie but did you have to fuck her buddy Travis too?