Honestly, Rick Rolling is the best practical joke ever. Like, there’s nothing offensive or mean  spirited about it. It’s just like “Oops you thought there would be something else here but it’s ‘Never Gonna Give You Up’.” which isn’t even a bad song. It’s fairly enjoyable to listen to. There’s no jumpscares, no screaming, no ill will. Just Rick Astley telling you he’s never going to give you up. I think that’s great. “You fell into my trap! Here, listen to this completely benign song that will have no negative effect on you.”