Mud Stickin' 

When oral sex is performed on a man with fecal matter in the giver's mouth.

Jack is so in to fecal play that he and Jill have been mud stickin' lately.

Mud Stickin' by Izzaaron February 28, 2009

stick in the mud 

Someone who prefers to allow things of seeming enjoyment pass them by

Someone who prefers to "stick" (stay, remain) in the "mud" (a metaphor for despression and unhappiness)

derived from "to stick in the mud" ..

The time has come to thicken the blood //
and make no mistake i'm a stick in the mud //

stick in the mud by adhesives April 27, 2003

stick in the mud 

In other words "a killjoy".

Be sure to join in enthusiastically with a sanguine's activities and ideas and above all, don’t be a stick in the mud!

stick in the mud by kaye321 November 22, 2016

stick-in-the-mud-itis 

Typical of college students in long-distance relationships, it is the tendency to want to stay in on weekends with one's significant other rather than going out and enjoying time with friends.

Guy 1: Hey, you want to come out with us tonight? We're going to do crazy college things!
Guy 2: No, I have a lot of work to do...
Guy 1: Bull, that's just an excuse to chat with Suzy. Since when did you come down with stick-in-the-mud-itis?

stick-in-the-mud-itis by djdoogen1984 February 19, 2009

stick-in-the-mud 

A person who is dull and unadventurous and who resists change.

Conservative.

Her fun-loving boyfriend had become her stick-in-the-mud husband.

stick-in-the-mud by bonmot58 December 8, 2012

stick in the mud 

a stuffy, old fashioned person

Your uncle is such a stick in the mud.

stick in the mud by The Return of Light Joker August 18, 2011

Stick in the Mud 

A person who won't ever let you have fun

Why you gotta be such a stick in the mud?

Stick in the Mud by Smasher6708 May 12, 2019