Ooooooooooh, this one still makes me shudder when I think of it!
One night while I was in college, I was driving home at about 1:00 am. I spotted a guy who was a buddy of mine and my fiance, so I waved like an idiot and motioned for him to pull over so I could say "hi". I pulled into a parking lot, jumped out and did the classic "skirt-pulled-up-as-if-hitchiking pose". As soon as he pulled up next to me I jumped into his car, put my hand on his thigh and leaned over to give him a kiss on the cheek.
Only it wasn't my friend.
It was a swarthy stranger who looked positively delighted at this strange good luck of having a young girl flag him down, jump in his car and grab his leg!
He urgently said "close the door! close the door!" as the security guards for the business (thankfully) pulled up to see what we were doing in their parking lot.
I explained that I thought he was someone else and politely declined his request for a kiss and boob-check before I left.
Thank God for rent-a-cops guarding businesses or I'd be living in a brothel in Turkey about now.