When you steal or choose a chair.
can be one someone was sitting on and got up.
Me: I have to get a napkin on the other side of the table. it will take me two seconds. (gets up)

You: Seatsies!

Me: Crappola!

ex.2

whoa! look at that golden chair amongst those blue ones!
seatsies!

erry' one: you suck!
by zeebee123 June 10, 2009
Get the Seatsies mug.