"Well then," Loki started. "two heads are not always better than one. Since you don't want to be freakish big down there" as he pointed to his crotch, "you can be freakish up there!". And with a wave of his hand Derek felt his penis retract into him leaving him a neuter down below just like a Ken doll. Then with gasps throughout the audience, Derek saw his hair start to fall out in clumps and land by his feet. His head from just above his eyebrows started to push out forming the shape of an erect penis. The change continued downward as the rest of Derek's head lost all of its facial feature leaving his eyes, nose and mouth on the cylindrical shaft. Than what use to be his cheeks began to swell until two fleshy orbs, the size of basketballs, hung down over his upper chest. Within a few seconds the change had been done and Derek "Johnson" was now one massive dick. The crowd started to laugh at the transformed bully. The look of of embarrassment could be seen on his "face". Soon what was left of his neck began to wrinkle as, like a firghtened turtle, his head began to sink into his shoulders. Seconds later all that could be seen was the crown of his head and a pair of eyes looking out between the wrinkles.
"Well now you really do think with your dick!" Loki said with a slight chuckle. Loki gave Derek a slight shoulder slap and immediately Derek,s head shot up to attention and a giant fountain of cum shot out of the top of his head. Some got on the ceiling, but most came hurdling back to earth right ontop of him. Loki of course backed away since he knew what was coming. "Oh I forgot to mention any physical touch has a similar effect to what we all just witnessed. Now who does the next prize go to?" Loki said with a grin and tone of a gameshow host.