/ck/ - Food & Cooking

Food industry workers of /ck/: Do employees really spit in/mess with food? Have you done this/anyone you worked with done this? Is it used solely on people that slight the workers (through not tipping or being rude) or just anyone they feel like fucking with?

It always seemed like a fear-mongering urban legend to me, like those razor blades in Halloween candy tales, but with the recent trend of licking ice cream I can't help but wonder if it's true.