The Smurfs (s01e24) The Purple Smurfs
A purple fly bites Lazy and he turns purple, causing him to say "GNAP GNAP!" and bite the other Smurfs, turning them into nasty, evil, angry purple smurfs as well.
A purple fly bites Lazy and he turns purple, causing him to say "GNAP GNAP!" and bite the other Smurfs, turning them into nasty, evil, angry purple smurfs as well.