When I was a bit stupider, I was walking in the backroom with two other TMs and said "Man, [TL] can suck it!" Needless to say, he was around the corner and looked through steel to see who said it. The look on my face must have been priceless. I think I was on a final and I was so scared that was gonna be the final nail in the coffin. Nothing happened though.
One time I also had a horrible day and was called up for backup for the 78447th time. I didn't scan something correctly and said "Sorry, I'm not usually a cashier." Woman with a friend asked "Oh, where do you work?" "Food section" "How do you like it?" "Truthfully, I hate this company. There's too much work; not enough pay... [blah blah blah]. Our motto is fast fun and friendly and that's farther from the truth."
"Oh well, I'm an HR manager from the group" as she hands me her discount card. Jaw meet floor.
"Well, at least you were honest." Nothing ever happened.