Swoof formula

The Swoof formula is a formula that was used by the Smurfs in the comic book and cartoon show versions of "The Astro Smurf" (and presumably also in "Dreamy's Pen Pals") which was used to transform the Smurfs into Swoofs. In the cartoon show episode "Good Neighbor Smurf", Brainy accidentally recreated the formula while he was sleeping over at Papa Smurf's house, causing Papa Smurf to transform into Grandpa Swoof.