When a woman spreads her legs in a seductive manner to let a
man know that she wants to have
sex with him.
Textbook example of "gappetizer": Sharon
Stone in the movie "Basic Instinct".
After I saw her throw me that gappetizer, I knew it was going to be a great night for me!
She gave him a
little "gappetizer" to get his attention and thought to herself,"He's mine
now Bitches!"