Killer Litter: Explained

Translation:
A 1kg rock will kill you from 30 m above.
A mahjong tile will break a bone from 20th floor drop.
For a falling egg, you will get:
- wetness from 4th floor drop
- torn scalp from 8th floor drop
- broken head from 18th floor drop
- death from 25th floor drop
A palm-sized watermelon rind will kill you from the 25th floor drop.
For an empty can,  you will get:
- broken head from 15th floor drop
- death from 25th floor drop
A 4 cm nail can break your head from 18th floor drop.