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6.
One who engages in general Jagaloonery.
The Baltimore Ravens are a bunch of Jagaloons.
by The one who hates the ravens January 19, 2009
 
1.
Any one adult person who engages in acts of a mentally retarded child. Someone who clearly demonstrates a lack of commitment to maturity and the responsibilities that come with it.
Dr. Doback in Step Brothers to his 40 year old son living at home who cant get a job or act like an adult:

"You Jagaloons! You're FAILURES!!"
by mahatma ice August 04, 2009
 
2.
The guy in a bar who wears a (pink) polo shirt, two sizes too small, with a popped collar; and probably drove there in a Honda Civic.
Bra 1: I Just ordered that Jagaloon an appletini.

Bra 2: Good, that will go nicely with the bag of dicks he’s about to eat.
by PhuzzyLogic July 13, 2009
 
3.
A small child that acts crazy/retarded.
Noah and Jacob are being real jagaloons!!!
by chicago416 May 04, 2009
 
4.
The guy in a bar who wears a (pink) polo shirt, two sizes too small, with a popped collar; and probably drove there in a Honda Civic.
Bra 1: I Just ordered that Jagaloon an appletini.

Bra 2: Good, that will go nicely with the bag of dicks he’s about to eat.
by PhuzzyLogic July 13, 2009
 
5.
when one or more people do something comical or act in crazy ways.
stop head-butting people you jagaloon!
by Otzi March 26, 2009
 
7.
A person, preferably a man, who is social awkward. Usually has a "deep in thought" look on their face, even though this person rarely thinks. Can being knocked down by a weak gust of wind. Commonly referred to as a, "Steven Plaisance." A person who acts foolish, strangely, or ignorantly. Jagaloons should be kept out of reach of children and monitored around small animals.
The only thing worse than being a loseroni is being a jagaloon.
by ralven March 16, 2011