"Transform or Dare, you sexy beast!" Jen said with a twinkle in her eyes.
"Transform," replied Sam eagerly.
"Become a two legged man wolf for an hour whenever you see female nudity,retaining your human mind," Jen said, smiling widely.
"Nice touch with the human...mind..thing..," Sam said, his body beginning to change as he stared at his sister's luscious form.