A yard mullet is what happens when you mow the front yard one day, but leave the back yard for another day. This leaves the grass in the back yard longer than in the front, giving your yard a mullet. It gives your neighbors the impression that you are a master of lawn care, when you are actually sporting some serious "party in the rear" action. Acceptable reasons for a having a yard mullet include lack of time, lack of motivation, the need to drink beer with one's friends, or any combination of these.
I mowed the front yard yesterday, but (it got dark, it got too hot, I got drunk) before I could cut the back. I'm rocking a serious yard mullet right now.
by lawnboy517 June 1, 2011
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Noun: A yard that is mowed in the front but not in the back.
Dude, you have a mullet yard!

I know, I haven't had time to mow the back and it is only the front that counts. As long as it is short in the front, it can be long in the back and it's all cool.
by Mullenkee July 2, 2013
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To only mow/maintain your front yard and let the back yard grow wild.
"My neighbor has the nicest front yard but I peeked over the fence yesterday and it looks like a jungle."

"That's a total yard mullet man!"
by Obey The Hypnotoad February 9, 2014
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Business in the front, party in the back. A yard that looks conventional from the street but becomes increasingly unusual the further you go towards the back.
You'd never know they have a gypsy camp in the back. Must be one of those closet hippy types with the mullet yard.
by Prof. Pressure April 8, 2019
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