A young guy who thinks his life is over because he lost his first love. He complains to everyone, explaining how he cant move on and or anything because he misses her so much.
A man who:
1) Is slow at any given task, job or life.
2) Either through inaction or action will, either slightly or drastically, inconvenience others.
3) Does not care about his job.
Corollary:
1) A Kenny does not necessarily need to possess the name Kenny. A Kenny can appear anywhere, and can be anyone. A common hobo, your Dad, the pope, the kid across the street who rides the short bus, or the guy who serves you food.
2) A Kenny can be female, but if and only if she slightly resembles a man and/or has a mustache (fake mustaches are included in this definition)
Guy 1: Are you waiting in this lunch line?
Guy 2: Yeah. Just ordered a burger. Why?
Guy 1: Dude, Kenny is working this line. Why would you do this to yourself?
Guy 2: So? Hes just the lunch guy. Whats so bad about him?
Guy 1: You sad, naive, ignorant slut. See you in 20 years.