He blew it at tracy for the heck of it but he then felt very woozy and then slumped down on the couch where his soul was then transferred into the dart. Which at the exact moment had struck tracy right in the thigh, it then injected Frankies soul into her body, almost effortlessly taking it over and taking control. Frankie then became conscious again but this time he wasn't 16 year old awkward Frankie he was hot college girl Tracy.
He resurfaced but he quickly realized that he wasn't himself in fact this was made clearer when he looked down to see two d cup breasts barely contained in a small bikini top. He looked around and saw he wasn't in his bedroom anymore and was in the pool standing...in the deep end. He gasps as he realized that somehow he has possesed his older sister.