I wish people would throw me a surprise party. Free stuff. When I get pregnant, I hope I get a baby shower, free baby stuff. It will save me some money. If someone asks you to go somewhere with them and they don't tell you why, it's probably a surprise party, especially if they ask you to come over and they won't tell you why.
Wait, I was thrown a surprise party, it was a good bye party at my last job and I got a free key chain and free Hello Kitty item.