A vag slap is when a male or female decides not only to play with, in, or around the vagina hole but instead initiates a slight pat of the vag. A noise follows and your dignity falls. Usually two slaps occur in a synchronized fashion, such as *Slap Slap*. There is a corresponding song that goes to the beat of "Can I Get A Clap Clap?" but instead the lyrics are "Can I Get A Vag Slap?"
Arbys Employee: Welcome to Arbys, home of the fucking bombest food ever, what can I get you?
Danielle: Can I Get A Vag Slap?
Arbys Employee: *Slap Slap*