In my experience in comedy, Best way to write comedy is to be unexpected. Random and funny. In my case, I would do the impossible but it also depends on the situation and the focus of your video. The best way to make people laugh is when you watch a video and never get bored or you could always show a few friends and ask for their opinions on how to make it funnier.
Another tip would be putting yourself in that situation and think what could you do to make it fun and random. You could always research on comedy skits/ films or walk around town, find something new and fun.