How to say that the butt meat is on the face?

A hot face against a cold butt.

How I treat you depends on how you treat me. I will only do this once. Maybe one day I will get tired of having a hot face and a cold butt, and then everything will naturally end.

The butt is the joint between the waist and the legs. The skeleton is the pelvis composed of two hip bones and the sacrum, with the gluteus maximus, gluteus medius, gluteus minimus, and piriformis muscles attached. The buttocks are tilted backwards, with the iliac crest as the upper edge and the gluteal groove as the lower limit.