"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. Within a few seconds the change had been done and Derek "Johnson" was now one massive dick.
"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 stood at 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.