What is Jackwave?
1.
To place two of one's fingers within the cavity between a women's legs, especially while in a drunken state or on the dance floor. If you see her again, the move was successful. This test can be used to distunguish between the 'Slut' and the 'Non-Slut'.
Did you see that, he just pulled of the jackwave on that 10-pinter over there!
