That's just hideous. You should be getting at least a warning for such unhygienic behaviour, and the fact you only realised after you saw the look on the customer's face tells me you have no place in any food prep area.

That is disgusting. I really hope the customer just walked out after that.

This may sound excessive, but you need to be fired pronto.

Noooooooooo

As a man who manages as restaurant I would make it my life goal to see you fired.

I would have puked on you

That makes no sense. You should have had gloves on and who licks gloves?

dirty dirty.

eh, mayonnaise is pretty damn tasty, but you have to know your surroundings

I once had a sandwich maker at Wawa cut himself while cutting my sandwich, he walked away & another person wrapped it up. I immediately unwrapped it and noticed blood on my sub roll. needless to say, the manager got an earful