Tribal Houdini
Based on the houdini, the tribal houdini is when you're having anal sex and before you ejaculate, you pull your dick out and spit on her lower back. She will then think that you ejaculated on her and she will turn around. When you actually ejaculate, you catch your semen on your pointer and middle fingers. After that, you rub the semen about a centimeter under her eyes.
You: I tribal houdini'd my girlfriend last night
Friend: How was it?
You: Ask her
Friend: How was it?
You: Ask her