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2.
Someone (female) who is amazing/exciting in the bedroom.

A girl who appears sweet and naive at first but turns out to be very sexy.

A girl who can take you by surprise at any given moment.

Geoff: So how did it go with that girl last night?

Dave: Well the night started out kinda boring at first but then she turned out to be a real alyson!

Geoff: Score!
by Myyyke March 05, 2007
 
1.
Most Alyson's are very gorgeous but don't know it. They think they are ugly and criticize themselves a lot.
They get annoyed with there closest friends but are always there for them.
Usually curvy or skinny. Not fat.
Usually brunette sometimes blonde.
Sexy and romantic. Very creative.
They make amazing girlfriends and fall for certain people. Not a player. Very unlikely to cheat.
An Alyson is a very funny and entertaining person. Very fun person.
Alyson: My thighs r so fat. Its so embarrassing!
Cammy: No they aren't you're gorgeous.
Jake: Alyson, seriously. You're super gorgeous!
Alyson: Yeah, okay whatever.
by channing T September 10, 2009
 
3.
Most Alyson's are very gorgeous but don't know it. They think they are ugly and criticize themselves alot.
They get annoyed with there closest friends but are always there for them.
Usually curvy or skinny. Not fat.
Usually brunette sometimes blonde.
Sexy and romantic. Very creative.
They make amazing girlfriends and fall for certain people. Not a player. Very unlikely to cheat.
An Alyson is a very funny and entertaining person. Very fun person.
Allie: Im so fat. Its so embarrassing!
Carly: No you aren't you're gorgeous.
Jacob: Allie, seriously. You're super gorgeous!
Allie: Yeah, okay.
Alyson: My thighs r so fat. Its so embarrassing!
Cammy: No they aren't you're gorgeous.
Jake: Alyson, seriously. You're super gorgeous!
Alyson: Yeah, okay whatever.
by channing T September 10, 2009
 
4.
A beautiful ass girl .
Guy: Have you seen Alyson

Guy 2 : Yes she is gorgeous !
by DrinkBluntsSmokeAlcohol August 19, 2011
 
5.
1.
A girl with brains, booty, loves a cold beer and a nice set of balls. She can usually out drink any man in the room. After a few you can find her in the bedroom with an un-named guy and find him missing in the morning.

2.
An object you can use to beat-off into. AKA Vagina

Dude I totally made that girl an Alyson last night
by sex me me up up February 25, 2008
 
6.
A really, hot girl with huge boobs and a nice ass. Great with handjobs or blowjobs, even though she says she may not be good at them or say they don't know how to. Really nice and funny, and always bring themselves down by calling themselves fat or ugly even though they are thin and skinny and very hot. Fun to be around.
Alyson Herlehy is very thin and sexy, I'd like HER in my pants
by Thereallkingofx April 12, 2013
 
7.
Lord of the Rings is her religion. Her favorite flavor is vanilla and she always smells like it... except when she smells like a big stinky fart. Alysons fart a lot. But they make up for it by being pretty much the most fun girl around. They are also prone to fits of giggles and the occasional sweaty bum. Alysons are smart, but they don't rub that in your face, unless it comes to the Legend of Zelda, then they will make fun of anyone who cannot get past the Great Decu Tree. Just to be clear: Alysons may be nerds, but they are really hot nerds.
Oh man, that first date went really well! At first I wasn't sure because she looked waaay too hot for me, but then she farted and I knew she was the one. She's a total Alyson.
by thelittleprince86 December 05, 2011