This makes me laugh every time

The rock is on the floor because of the killer earthquake they just started.

Chemist screw up:
Unstoppable supper acid

For Geology, I offer you my former GTA screw up:
Took radioactive mineral home, plants died in matter of days.

Jesus Marie they're minerals!

Geologist screws up:
Highly toxic mineral enters water supply and kills thousands

Geologist screws up: lead from Galena sample is now in water supply, rendering all water in the city unusable.

Physicist screws up:
-10 marked as 10.