Mashing off 

Masturbating with a flaccid penis

One might find themselves mashing off when they’re bored of watching porn.

Mashing off by Original Orangutans December 27, 2018

marshing the office mellow 

when someone's negative attitude or questioning brings down the mojo of a workplace.

"Chel's boss was marshing the office mellow when she fired Chel for using "damn" in an e-mail"

marshing the office mellow by ruchristopheric May 28, 2006