An incredibly muddly wet dog; a dog who has been out in the rain; a dog who has been digging in the yard and is covered with mud; a dripping wet muddy dog with muddy feet staring at you from outside the sliding glass door who wants to come in and get mud all over your house.
"That Mudmoose wants to come in the house!" "That dog's been digging in the yard again...now he's a f...in' mudmoose!" "Don't let that mudmoose in here again, the last time he got mud all over the couch!" "Dry off that mudmoose, then he can come in."
by Lars the conqueror April 1, 2010
Someone who digs up your yard; a dog who digs up your yard; a kid who digs up your yard; an x-boyfriend who digs up your yard with his 4 x 4 truck.
"That stupid mudmooser dog of mine dug up the yard again." "Look what my x-boyfriend did to the yard--he's such a mudmooser." "That mudmooser kid did this with his dirt bike, I am so going to lose my security deposit." "YOU MUDMOOSER! Stop digging holes in the yard!"
by Lars the Conqueror April 1, 2010
A dog who is in the act of digging up your yard; A dog who is covered with mud and was obviously digging craters in your yard; the act of digging up someone's yard; digging up someone's yard with a 4 x 4 truck; doing cookies in someone's yard thus digging it up; creating any muddy mess in someone's yard in any way possible.
"Look at that, the dog is mudmoosing up the yard again." "Holy sh** stop that dog from mudmoosing up the yard!" "the kids have been mudmoosing up the yard with their dirt bikes." "I caught my x-boyfriend mudmoosing up my yard with his 4 x 4." "You stupid dog, stop mudmoosing up the yard!"
by Lars the Conqueror April 1, 2010