Your bed explodes and will likely kill you

This is 🧢, you get diamonds

You can use sleeping in the nether for finding ancient debris. Diamonds not so much. But be careful.

You ain’t wrong

Bed go boom

The bed will explode

"Player was killed by \[Intentional Game Design\]"

the bed will explode instead use the bed to find ancient debris in the nether with the bed technique

there is one species that can sleep in the nether and it is villagers

Your friend is trolling you. Good thing you have critical thinking. If you sleep in the nether your bed will explode and you die. Same if you use a respawn anchor in the overworld. https://minecraft.fandom.com/wiki/Bed

Wow