Mystery Mason 

To give oneself a stranger after working with concrete all day and having dry, dirty, chaffey hands. A variation on the stranger commonly used by those in construction, masonry etc.

After pouring that concrete slab yesterday I went home, gave myself a mystery mason and fell asleep. Why, what did you do?

Mystery Mason by leirbag October 9, 2008

Mystery Shot Bowling 

Bowling where you order a bunch of mystery shots that the bartender gets to choose. Then when a person gets a strike they get to give one of the mystery shots to someone else that is bowling. Neither the person giving or taking the shot knows what it is. This continues until all the shots are finished or someone starts throwing their ball in the wrong lane.

Cadillac Rules: If no one gets a strike in the first five frames, you get to give shots away if you get a spare.

One and Done Rule: If you choose to keep one of the shots for yourself instead of giving it away.

It was college night at Varsity Lanes, so we got to play Mystery Shot Bowling.

Mystery Shot Bowling by CalliopeDM April 12, 2010

Mystery Guest

A person who nobody knows at a party, usually stands next to something, pretending to drink from the same bottle after it's empty.

Dude who's the Mystery Guest hanging out by the fridge?" "No idea, I thought you brought him?

Mystery Guest by dmaulition July 15, 2011

mystery poo 

When you poo in a bag and hide it in someone's vicinity. After a while they smell it and have to find it.

Did someone mystery poo me? It smells in here!

mystery poo by yfzrider2 October 26, 2013

mystery bae 

that one secret admirer with a random phone number you don't recognize, texts you out of nowhere and starts flirting. Then you're intrigued and continue the conversation, but no matter what they never reveal their identity. Too bad they seem super cool

"hey sexy ;)"
"Who is this?"
"hehe I'm your mystery bae(:"

mystery bae by predestiny May 14, 2015

Mystery dick

A dick you have sex with but never see . You never get a picture , and you never have to give head .

Girl 1: how was your date with James???
Girl 2: it was great ! We hooked up but he slipped me that mystery dick . Where does it come from? Why can’t I see it ? And why do I not care ? I orgasmed 5 times

girl 1: ohh , that’s great sweetie !! I’m sure he’s not hiding anything. Men are shy about their penises. ( said unconvincingly ) Do you think you’ll take the mystery dick again?

Girl 2: mmm, I don’t know . Kind of weird . What if his cock looks like a baby’s arm with a hand ?? I can’t take that chance . I’m going to tell him I want to be friends and go on day dates, instead!!

Mystery dick by Alikitten123 October 13, 2020

Mystery moment 

When Mystery posts a message that contains something funny and then quickly deletes it.

That was a Mystery moment

Mystery moment by anotlostman April 8, 2021