Top definition
Butt frost is the frost that builds up on a nudists butt when standing outside too long in on a extremely cold Winter day.
Jenny developed butt frost when she went outside to get the mail.
by CharPoop February 24, 2015
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug