Dig a 2x3 hole in the ground. This will be the trap zone. Make it 3 blocks deep.

To get the most out of your "Lovely Craft" experience, follow these community-vetted tips:

: Stepping on the plate turns off the torch, retracting the pistons and dropping the victim. video link

Because any trap that forces you to engineer a decimal-based fall damage calculator to achieve the funny number is objectively superior to a trap that just uses lava.

Funny + Number