Well, I was thinking about those quiz programs, where they make you phone up your mum in the middle of the night telling her you went gay and married one of your best friends. If I'd call me mum up in the middle of the night, I'll give her a heart attack and she's gonna worry immediately.
But tbh, I'm always up for prank calls, done a shit load of them
Two of the funiest:
Calling saint up somewhere around 4 in the morning, like 4 times. Made him believe I was in front of his door, which I wasn't ofcourse. He went checking If I was there all 4 times
Another fun one was when we were coke cniffing on new years eve. Pim eventually fell asleep and Saint and me changed the number of his mum in his phone to my number, so when I called him, it looked like his mum was calling. Made him a bit nervous. Didn't help either when Saint and me were telling him to pick up, cuz it could well be something terrible had happened

heheheheh