Just about everything that goes around
"cell phones at the gas pumps" and all that can be checked out on urbanlegends.com, but hey!
I wouldn't put anything past anyone out there!
I remember the worst I have ever heard, was people putting blades and things in apples or candy during Holloween.....there are certainly some sick people out there. I was appalled when
my son was in elementary school, and I always baked cupcakes or whatever, one year it was sent home: can only have store-bought! Figure that one out.