Surprise... Not my story, but a good one -- A classmate of mine is about to celebrate his 21st birthday, a pretty significant milestone in a young man's life in the US (as it is the legal drinking age). It also happens to be the start of a major school holiday break. He arrives at the airport, gathers his bags from the baggage claim and heads to the curb where he expects to be met by his fiance. He waits, and waits, but his fiance does not appear. He calls her home, her cell, sends her texts, but no response. Increasingly frustrated, he tries his parents with the same result.
After an hour has passed his patience is exhausted and he decides to take a taxi when he discovered he does not have enough cash to pay the fare. Unable to think of any other alternative, he calls his ex-girlfriend who is VERY pleased, not only to hear from him, but to accommodate his need. Its not long before she arrives and she demonstrates her enthusiastic welcome with a rather steamy kiss. To minimize his burden of carrying his bags to his room, he directs her to the back entrance to the house and together they ascend the rear stairs to the separate outside entry to his bedroom.
One thing leads to another and soon the two of them are naked and enthused about the forthcoming tryst, but his ex is a bit of a tease and leads him on a merry chase. She darts from the bedroom with him close behind, dashes down the staircase, and they erupt into the quiet darkened living room where he catches her, groping her with obvious intent -- at which moment the lights come on and people jump from hiding yelling SURPRISE!
Yep. That's right: parents, grandparents, neighbors, and Fiance emerge from hiding, shocked with dismay to find his ex-girlfriend bare and he in rampant glory, having unexpectedly arrived at his surprise birthday party.