The Sand Trap

When you rub sandpaper on your condom so when you stick it inside a girl it grips like hell

Guy: “I just finished setting up the sand trap.”
Girl: “It’s gonna grip like crazy”

The Sand Trap

You rub sandpaper on your condom so it is grippier, and you stick it inside a girl.

Guy 1: “Hey how was last night?”
Guy 2: “It was great. I used the sand trap on her.”
Guy 1: “Nice.”