to hotbox one's vehicle, such as scooby and shaggy did in the show "Scooby Doo". Doo being short for doobies of course and the fact that whenever they leave the mystery machine, smoke seems to emit from it. scooby snacks of course referring to the munchies, along with the two feet tall sandwiches they always ate.
"Pat what is up bro?"
"I just mystery machined it before i got here, so im feelin pretty satisfactory."
"I just mystery machined it before i got here, so im feelin pretty satisfactory."
by scooby snacks. January 6, 2008

A variation on the stranger. The action of having a partner sit on thier hand until it falls asleep, then proceeding to whack you off, as so neither of you are sure of where the pleasure is coming from.
Guy 1: My girlfriend gave me a Mysterious Stranger last night.
Guy 2: How was that?
Guy 1: Man, I didn't know if I was comin' or goin'.
Guy 2: How was that?
Guy 1: Man, I didn't know if I was comin' or goin'.
by 6the6fly6 May 8, 2009

Like a drunken blind-date, it is the act of banging somone at a party while you are both legless, and having no memeory of who the actul person was the morning after. You do, however, have evidence (condom wrappers, lipstick etc). Its never happened to me, personally.
You know how was off his face from crownies at Simmo's rave last night? Well, apparently he woke up after a mystery meet with only two throbbing heads and a ear-ring to go on.
by C-Dawg (no, really) April 22, 2006

Plastics, cutters, and other agents used to cheaply increase the volume of the cannabis product known as hashish
by anonymous May 1, 2004

Building A Mystery is one of the best songs ever. It was written/performed by Sarah McLachlan an extremely talented Canadian singer and songwriter. Building A Mystery is one of Sarah's greatest hits. The song is not a teeny bopper whiny punk song but a mystical darkly pop song.
You come out at night|That's when the energy comes|And the dark side's light|And the vampires roam.... (Lyrics from Building A Mystery
by Ilana July 16, 2008

Sam: You know whats really exhilirating?
Jay: No, what?
Sam: I tried giving myself a mystery man last night and-
Jay: Stop Talking...
Jay: No, what?
Sam: I tried giving myself a mystery man last night and-
Jay: Stop Talking...
by mysterypaul July 25, 2007

by aussie bob March 7, 2005
