system
surprised: It was around the time of my 18th birthday and I had mock exams so I couldnt really celebrate it. But my friends threw me a surprise party
human
I couldnt celebrate my 18th birthday as I had exams during the time and I felt terrible for it. But my friends threw a surprise party for me and it was the best! 
human
That's great! How did they surprise you?
human
I was studying in my bedroom for a couple of hours straight with headphones on and then my mom called me to the living room for dinner and when I went out the whole place was decorated and everyone was there
human
That is so sweet of them, I hope you enjoyed it!