muffboxing 

The act of lesbian sex, in other words, rubbing vaginas

"Those chicks were just totally muffboxing"

muffboxing by T-toast Forreal February 6, 2014

mudboxing 

A more appropriate phrase for the act of inserting ones penis into ones bumhole.

What did you do last night?

You know... Just a little mudboxing to past the time.

mudboxing by Mr Noice Guy April 9, 2010