mystery hand 

You bang some ckick in a dorm room with a friend hidding in the closet. While you're fucking your friend gets to grab what ever he wants to ( on the girl)

Hey make sure you grab her big tits or ass - it's a freebie, while I'm fucking her; that's a real mystery hand.

mystery hand by cheesecake123 May 28, 2006

Mystery Moose 

Mystery Moose is the act of making a moose sound (and hand gesture on side of head) whilst performing a sexual act on a partner in the 'doggy style' position.

He was banging me from behind and I heard a strange moose sound, I asked him what this was and he said he couldn't hear it, I heard it again and again and he still said nothing. A short time later he started laughing to himself and revealed it was him making the sound, aka, Mystery Moose.

Mystery Moose by Callum Reckless December 9, 2008

Mystery-wind 

The unexplainable, but rather enjoyable rush of wind that is emitted up the stairwells leading to the subway system.

1. Yes! I've been looking forward to this Mystery-wind all day!

2. Bob- Come on! Let's take the subway!
Jim- What's wrong with you, man? The store's just around the corner.
Bob- I just want a dose of Mystery-wind.

Mystery-wind by Frank Nelson and his brother Jake September 16, 2008

mystery mutt 

a mixed breed dog of unknown breed origin.

a dog that resembles many different breeds.

my dog looks like she could be a shepard/jack russell/sheltie or a whippet/collie/border collie or a corgi/shepard/whippet or a smooth collie/jack russell....she's a mystery mutt.

mystery mutt by Lisavi April 6, 2008

mystery burrito

a burrito that you dont know what is inside

is that a mystery burrito

mystery burrito by makemoney1234 December 17, 2010

mystery makeout 

when the male ejaculates semen into a drink mixer. then the female squirts cum into the same drink mixer. then use the drink mixer and mix the females cum and the males cum together. when the substance is properly mixed, both the male and the female take drink as much as they can. when they do that then they makeout with the substance in their mouths.

hey, ally wanna have a mystery makeout tonight?

mystery makeout by j-fish origanal mysterymakeout April 26, 2011

mystery dating 

when you are not in a relationship with a person, male or female...but he/she thinks you are.

are you guys mystery dating?"..."what?"..."are you dating her?"..."no"..."is she dating you?"..."ah, crap

mystery dating by bosniaisforlovers June 7, 2011