Ghost Cheeks
The warmth on a seat left by another person
Example
Ghost cheeks are a powerful force to harness when enduring frigid Minnesota winters.

When you sit on a warm toilet seat
Related Slang
BIC | Butt in chair |
BOC | Butt on chair |
Arse | Butt |
Belfie | Butt selfie |
BRRRB | Be rrright back |
Nosecicles | Icicles on your nose |
Porcelain throne | Toilet |
Ghost cheeks refers to the warmth left by a person that is felt by the next person to sit on the chair. It plays off the idea of a ghost which represents a presence that is felt but cannot be seen. And, of course, the "cheeks" part refers to a person's bottom.
The term can refer to any number of pieces of furniture, whether it be a chair, couch, bench, or even a "porcelain throne" (which grosses some people out). Ghost cheeks are especially prevalent when the temperature drops and the warmth is more noticeable. They are extremely helpful when sitting on a cold bench outside.