When a girl (preferably Mary Sue Coleman) watches you while you sleep and you suddenly jizz in her face and yell 'SURPRISE' !!
Everyone heard Chris yell 'surprise' when he Mary Sue Surprised the president of the University of Michigan last night..
by kelseykilla November 1, 2010

Given on someone's birthday, this involves tying down the recipient and attacking them with tentacles shaped like giant penises, followed by urinating on them. While this may sound unpleasant to the average person, there are at least 20 different hentai mangas devoted to this very subject.
Geoff: Happy 22nd, Jamie! Now it's time for your Japanese Birthday Surprise!
Jamie: Japa-what? What the hell are you... oh my god AGGHHHHHHHHH
(screams of agony are heard)
Jamie: Japa-what? What the hell are you... oh my god AGGHHHHHHHHH
(screams of agony are heard)
by Jeff Shewer May 17, 2009

the double volcano surprise is when you put mentos and diet coke in a girls vagina, and baking soda and vinegar in her anus. thus causing a chemical reaction, which shoots "volcanic" liquid out of the said holes. it isnt much fun for the girl, but it sure is fun to watch.
by lieutenantURNER October 21, 2008

The sexual practice in which you convince your girlfriend/wife/partner/whore to gargle on your baby gravy, then unexpectedly you uppercut her in the sternum screaming "SURPRISE" and avoiding the consequent rainbow of liquids.
Where's Katie?
In hospital with a punctured lung. Tyrone went a bit far when he Gargle Gargle Surprised her.
In hospital with a punctured lung. Tyrone went a bit far when he Gargle Gargle Surprised her.
by UrbanBob June 8, 2010

by David and Jacob March 28, 2007

The best type of blow job. One where the man doesnt have to beg the girl because she, for whatever the reason, decides she wants to do something nice, sexy and spontaneous. Never say no to a BJ.
Man: Baby, why are you taking my pants off? I'm trying to get work done.
Woman: Just go with it.
Man: How unexpected and sexy of you.
Woman: I just wanted to give you a surprise blow job.
Woman: Just go with it.
Man: How unexpected and sexy of you.
Woman: I just wanted to give you a surprise blow job.
by GrassDoctor November 4, 2013

by DickH May 12, 2008
