1 definition by Plato's_Bitch

Smiling In Relative Amusement. For when you're not quite laughing out loud, but dont wish to "meh".
Henry: Unless this thing works sometime soon, it's going out of the window.

Will: That could get expensive.

Henry: SIRA.
by Plato's_Bitch April 14, 2009
Get the SIRA mug.