Person B: You're such a liar, you stink of sex and rubber.
Person A: Haha, how'd you know? :phone call: Well, hey I have to jet.
Person B: You going to double tap tonight aren't you?
2. Hitting someone or something twice.
3. Shooting something or something twice.
Pretty much doing anything twice.
2. "I double tapped him in the car"=I hit him twice in the car.
3, "I double tapped him, just in case"= I shot him twice, just to make sure.