Final Submission
Telltail
Pronounced "tel-TAYL"
A tell is a hint or clue something isn't true, and shows our snake's duplicitous nature. A tale is also a euphemism for a myth or lie.
Our snake actually has a telltale smirk, showing something isn't right with that tempting apple.
However, it also works in another sense: The folk hero William Tell was famous for shooting an apple, which our snake happens to have on his tail. Literally, a "Telltail."