An 1850's term to reference 'sausages'. The 'mystery' was due to the fact that nobody but the maker of the sausages would know what was in them, and the 'bags' were the guts which contained the chopped meat.
“Hi, Butcher Barry. I'll take 6 steaks and a few Bags O’ Mystery if that's okay.”
by C L G January 31, 2021
Get the Bags O’ Mystery mug.
A booger that immediately vanishes upon blowing it out.

It is usually found by someone else hours later, stuck to some conspicuous place on your body.
"Hey, Jim! You've got a big snot on your shirt!"
"Damn that mystery booger!"
by Tater Bater May 8, 2020
Get the mystery booger mug.
A shit that comes out so fast, you can't decide if it's liquid or solid.
I took a mystery shit last night.
Get the mystery shit mug.
When some unexpectedly kind of liquid sprinkles on your head/body, and you have to touch it with your hand and look at it to identify the liquid. This usually happens when it's not raining or when you're inside. The build-up to the reveal is always intense, yet 9/10 times it's still water. You always think it's birdshit or some kind of bodily fluid.
"I walked beneath a tree yesterday and got a mystery sprinkle. I thought it was birdshit but it turned out to be just water."
by Piemelfiets October 25, 2017
Get the mystery sprinkle mug.
Finding an unknown object and t-bagging it.
Tim: What's that?
David: I don't know
Tim: *T-bags it*
David: MYSTERY T-BAG!!!
by OhMehDamn July 18, 2011
Get the Mystery T-Bag mug.
The van that has a nice man who looks like Santa clause offering you candy
Santa: hey, look it’s the mystery machine, do you want to see Scooby-Doo
by Norville Rogers April 23, 2020
Get the Mystery machine mug.
A person who sinks a monster deuce in a communal toilet, but doesn't flush it or use toilet paper, leaving the Loch Ness Log for others to see.
by travisbickle86 July 8, 2019
Get the Mystery Logger mug.