Happy birthday to you
What would you do if your colleagues forgot your birthday? Most people wouldn’t overthink it, and wouldn’t make a fuss, but this person decided that if he wasn’t going to have a party, a cake or even some birthday wishes, someone (or everyone) in the office was going to pay.
To remind everyone they had missed his birthday, this person stuffed the emergency exit with balloons – or that’s what he wanted people to think. We don’t know how the rest of the prank went, but if people were terrified of opening this door, he did his part. These balloons must have stayed there for a long time before someone had the courage to open the door and find out it was nothing but a prank.