When a "woman" unexpectedly reveals that she is, in fact, a man and has a penis. It is called a Thai surprise due to the extra convincing look of Thai men posing as women.
I got back to my place with that Asian girl from the bar and she gave me the Thai surprise, I'm pretty sure her penis was just as big as mine.
by Thean1894 May 07, 2013
The unexpected feeling of a person's genitals on another person's back, sometimes when said persons are on a waterslide together.
by jacinto obnagon March 25, 2003
When you ejaculate on another persons stomach after sex and before you even notice the women forcibly hugs you.
by Slayinator235 September 21, 2011
An unexpected, dramatic last-minute event which potentially alters the outcome of an election. The term dates to the 1980 presidential campaign, in which Jimmy Carter planned, for October of that year, an operation to rescue American hostages held in Iran. Carter was lagging behind in polls and a successful rescue, an "October surprise," would likely have shifted the momentum to his side. The attempt failed, however, and Carter lost the election. Some have suggested that the Reagan campaign deliberately sabotaged the effort in order to bolster his candidacy.
Before Osama bin Laden released his newest tape, some people thought the Bush campaign would produce him as an October surprise.
by Sam Sundquist November 02, 2004
When you are fucking a girl who wants you to pull out and right before you cum you turn your hat sideways and scream "Squirtle! I choose you! Use water gun!" then cum in her anyway
by Priest and Matador July 18, 2011
by Naga 5 Stacks January 11, 2012
noun, The term used to represent the event any man, including myself, despises: Getting an erection in public, usually when in an open area and/or near many other people. The victim generally walks like an old guy, seems to be weilding a very large gerbil in their pants, or simply tries to think of gory, morbid, discusting, non-arousing things to get rid of The Surpriser Riser. Usually, when the man may be ok with having an erection later, as he is alone, he will not get one. Until he goes out in public again.
by Carson Lynch July 13, 2006