Stealing Coworkers Lunch

Redditors, what's the pettiest thing you've done after someone stole your lunch?

Replaced their milk with non-dairy creamer every day until they finally complained about spoiled milk.

I swapped their sugar with salt in their coffee container. Heard them scream

from across the office. Someone ate my expensive artisanal cheese. I left a

note: Hope you enjoyed my lactose-free, ghost pepper cheese. Never happened again.

I started labeling my food with ridiculous warnings, like Biohazard: Do Not Consume.

My coworker kept stealing my yogurt. I marked one with a tiny 'X'.

Caught them red-handed after they ate it. They never stole again.