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1.
Spanish word for "party"
I'm thinking of holding a little fiesta in celebration of..."
de Ben 20 novembre 2003
 
2.
A mnemonic to children (well, everyone, really) about flushing the toilet. Flush It Every Single Time, Amigo! (Feel free to substitute another word for "amigo," especially if you are getting sick and tired of reminding the non-flusher to make the effort).
When I entered the bathroom and discovered that my 5-year-old daughter had once again neglected to flush the toilet, I yelled, "Nicole . . . FIESTA!" and she apologetically returned to flush.
de Vladimir Swindon 29 juillet 2009
 
3.
A female-only hangout, a collection of tacos all together

Opposite of sausagefest
Guy: They're having a fiesta, so we can't go.

Other Guy: Damn!
de elok 29 avril 2005
 
4.
A Party or Dance where the number of females is FAR greater then the number of males. The dance is NOT at equlibrum making for a imperfect party.

A Fiesta is the opposite of a "sasuage fest."

Signs of a Fiesta include but are not limilted to:
-Small circles of girls dancing with themselves
-High pitched screams

-Strong sent of perfume
Subject A: "All I see is a bunch of girls dancing in small circles with themsleves..."

Subject B: "Ya it's just one big Fiesta down there!"
de Bismarck14 27 octobre 2010
 
5.
When a man blows his load.
"Here comes the Fiesta" he screamed as he blew his load on her face.
de Steve 23 novembre 2004
 
6.
Most notable from cumfiesta.com. Fiesta means to ejaculate or shoot a huge load on a girl.
Are you ready for the Fiesta? I just fiesta'd all over your girls face!
de Lou 7 mars 2005
 
7.
Another term for anal probing, usualy done to cows as a strangly sombrero shaped UFO floats overhead.
*Man runs behinde friend with a pool stick yelling* "fiesta!!!!"
de A.V. Eternity 17 novembre 2008