the gypsy handshake
A girl gives a guy a handjob. When the guy cums, she catches the jizz with her other hand. The girl then immediately gives one rather firm yank to the guy's member while simultaneously giving an open handed slap across his face with the jizz-laden hand. Before the guy can react, the girl quickly turns and walks away.
"I thought she forgave me for cheating on her because she started giving me a handjob later on. Well, I was wrong because after I came, she gave me the gypsy handshake. Crazy bitch!"