Speaking of practical jokes gone wrong. When the FBI shows up you know you may have crossed the line from harmless fun to terrorism suspect.

Federal agents investigating ‘Unfaithful’ Tiger Woods Gatorade bottles

DENVER - Federal food safety inspectors are investigating the bootleg Gatorade bottles turning up in local stores.

On Saturday night, 9NEWS reported shoppers were finding bottles with photos of Tiger Woods and his wife and the word “unfaithful.”

9NEWS sent a crew to a Denver Safeway and found additional mislabeled bottles on the shelves.

A temporary worker for Gatorade says the company sent sales reps and temps into stores Saturday to remove those bottles.

Gatorade told us it has contacted local authorities.

9Wants To Know Investigator Kyle Clark has learned the Food and Drug Administration’s Office of Criminal Investigations is looking at the situation as a possible tampering or adulteration case.