Top definition
a hot girl with uber optimism, a great smile and a wicked sense of humor, who loves dark beer and DC Comics and will pose in her Wonder Woman costume if you ask nicely

a.k.a. Smiley Girl, Agent of the Universe: a smiling, happy go lucky girl in ponytails standing at the door with a message, ringing the doorbell with the full faith and credit of the Universe standing behind her.

Note: usually seen wearing ponytails
"Did you see that girl smile at me? I'm going to ask her out!"

"Dude, that Tiasha smiles at everyone, just to make them feel better. She's out of your league."
by PandoraVirus123 May 18, 2010
Get the mug
Get a Tiasha mug for your barber Beatrix.