by KreAM420 September 15, 2010

A sexual act. To began you must find a women who seems to be sad. offer her a back rub. during the back rub gently place your penis on her right shoulder (If placed on the left side it is a penis surprise not a cock surprise). softly say yes or no. when the women begins to reply ram your cock in to her mouth as quickly as possible and run. if not preformed quick enough you may loose cock to teeth.
by dasilva1 October 5, 2010

While getting a blowjob, dump in your hand, then ejaculate in her mouth while slapping her in the face with your feces.
by Down4you January 7, 2011

When a person, usually a persons landlord, makes them give them rent through sexual favors, usually involving to gay sacks on or near the persons face.
Oh man, I heard hampton was broke last month so he let his landlord give him the old smithsack surprise.
by Agent Peterson May 20, 2009

The muscles of a man (or, perhaps, a woman) that are startling--be it because of his composure or other physical features that do not make you suspect muscular characteristics. Surprise muscles are most common in the shoulder and arm area, as those may be hidden by a shirt.
by merekat August 29, 2009

When a girl goes down on a guy and puts a finger up his ass without him expecting it.
The Mexican Surprise was popularized by the award winning film "Y Tu Mama Tambien".
The Mexican Surprise was popularized by the award winning film "Y Tu Mama Tambien".
by dj tightFold September 16, 2010

the delicate art of getting off your girlfreind or any woman really with the vibrations of an xbox 360 controller.
named after some guy's Halo 3 online name that i totally p0wned 3 years ago, when i first heard it i initially thought it was a sex move,but it wasnt so now it is.
named after some guy's Halo 3 online name that i totally p0wned 3 years ago, when i first heard it i initially thought it was a sex move,but it wasnt so now it is.
"Dude;last night i was playin halo online and i just grabbed my chick and started rubbing her clit with the controller,and every time i got shot or killed it vibrated,i totally got her off with it! i totally gave her the serbian surprise!"
by The M4chin3 November 20, 2009
