Wait for a friend to go afk, build an obsidian box around where they are and make it 2 layers. Add an elder guardian nearby and fill the box with water. Also add a conduit so they don’t drown. Pretty funny watching them break the box. Try it. It works.
Pranking in mc

Wait for a friend to go afk, build an obsidian box around where they are and make it 2 layers. Add an elder guardian nearby and fill the box with water. Also add a conduit so they don’t drown. Pretty funny watching them break the box. Try it. It works.
that orrr

make an underground railroad under everyones houses without them knowing and slowly sneak into the houses and steal stuff

Wait for a friend to go afk, build an obsidian box around where they are and make it 2 layers. Add an elder guardian nearby and fill the box with water. Also add a conduit so they don’t drown. Pretty funny watching them break the box. Try it. It works.
then the kid calls his friend to save him. it works, until another kid comes.

minecart him to the nether roof, then break the portal that you got through, walk away and pray that he doesn't have obsidian. guard the nether portal place with your life. if you can, and want to save on rails, boat him far far away and do the same prank, it's going to be very very time consuming for him to get out.

if they don't have elytra, break bedrock using glitch, drop shulkers and boats to make a platform put them in, cover up the hole.

Or.. Just let ur friend be afk and craft a German Banner of WW2 from a loom and throw it at ur friend(name it ur death) and when they come back, Kill them with a netherite sword or an enchanted bow with Flame, Punch and power

I tried it with a friend and that went pretty good for me
Try it in the nether for the best experience too
Make some ideas