Another woman confessed to serving a customer caffeinated instead of decaff coffee "because it was the end of the shift and I didn't want to get the machine dirty again".
Others referred to a Sydney family who planned legal action after allegedly being served icecream containing human excrement following a complaint.
One user said while they had never witnessed customers' food being tampered with, fellow staff would often play tricks on each other.
According to this part time chef: "I had some one sneak salt in my coffee, Tabasco on my ice cream, got served a fried battered dishrag (fresh) as a Schnitzel etc. But NEVER have I've seen a customer get spit in their food (the most common myth)".
For a former McDonald's employee, they shared how they had occasionally given a customer the exact burger back they had complained about.
And if you've ever made the joke that the chef is probably stomping on your returned meal before sending it back to you, user Cassie Moffat has witnessed such action first hand.
"Someone sent their steak back for not being cooked enough and the chef threw it on the ground, stomped on it with his boot you know really mushing it into the ground.
"Then he picked it up with the tongs and cooked it for one or two more minutes and sent it back, and customer [sic[ ate it unawares."
- nzherald.co.nz