Chicken and Mayo Sandwich tasted like ass

Good Day,<br> <br> Yesterday I bought a Chicken and Mayo sandwich for my mom. When she began to eat it she stopped and said I must have it whilst pulling a bad face. I told her she was being silly and i took it to the office. But my word when i took a bite from it I nearly Died! The sandwich tasted like it was used as the chefs Toilet paper! The taste and smell was exactly like SHIT! I could not believe what I had put in my mouth.