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1.
1. A person, usually a man, who takes pleasure in exhibiting his private parts to random people in public. A cliché flasher wears a dust-coat, flabs of which he spreads in front of his victim(s).

2. A person who interupts tennis/soccer or any other kind of match by running onto it naked. Flashers do it usually without a particular reason, for the sake of doing this.
Ad.1 While I was going to meet you I came across a flasher, lurking in shrubs. He had nothing to be proud of!

Ad.2 Kournikova was to serve when a flasher burst in and ran with his fingers V-shaped.
by necrotism May 21, 2006
 
2.
noun A super-heroic person who repeatedly performs feats of inhuman strength.
"Did you see Flasher throw that bicycle?"
"Yes it was at least 30 feet"
by George Plimpton III August 04, 2012
 
3.
A pussy who got his ass handed to him from someone from Norwood and now ridicules the whole town. This worm probably got thrown out of a local establishment because he was slapped by a girl who he was rubbing his little pecker against. This troll still lives with his mom and will never be able to afford a house. He has multiple DUI's and carries weed like he is a big time hood. It's just a matter of time before he takes it in the seat which will ultimately lead to the demise of his wothless life.
I was the BEST alter boy in town, they called me flashers.
by WhothatsWho April 13, 2011
 
4.
an old buss pass or travelcard which you flash in front of the bus driver in the hope they won't notice.
i have bumped drivers with flashers many a time. i'm so skilful, i don't buy tickets at all.
by Casper Valentino December 12, 2005
 
5.
An obese and usually smelly high schooler, with low self-esteem who enjoys to play internet flash games to feel like they are good at something.
Jeff: "Billy is such a flasher"

Will: "What a fat fuck"
by Hiney Spanker April 27, 2007