Jake was bored. Really, the only reason he was at the party was because Luke had dragged him there; he really didn't like any of the people there, and even the chicks didn't interest him (too much) since they were all either too cold or already had boyfriends.
The booze was nice, though.
As a result of his boredom, he'd somehow found himself sitting on the couch beside his friend Luke, watching him pwn that 8-bit Mario game and grunting every once in a while when Luke would make a comment about how stupid it was that Princess Peach was 'such a pussy, she can't stand up for herself!', as he put it.
In a way that was rather familiar to him up to that point, his mind began to wander, with the constant input of his friend spouting about the elusive princess and his horemones priming his thoughts.
'I wonder what her pussy looks like? I wonder if blonde is really her natural hair color? (He was really drunk by this point, wondering about the natural hair color of a video-game secondary character.) I wonder how big her boobs are? They'd have to be pretty big for Mario to spend all this time and effort going to save her. And that big, pink dress; I wonder what she wears under it? I wonder if her panties are as frilly as her dress, or her hair, or for that matter that stupid lilty voice. I wonder how she shaves her cunt-hair? Like a heart or like a triangle? But I guess her boobs would be more important, really. I wonder if she wears a bra under that dress, or is there some kind of support built into it? I heard that some girls wear one of those tummy-pincher things. What was it called? And if she did, what color would it be? And I still want to know exactly how big her boobs are! And I wonder... what's wrong with Luke?' It wasn't until that point when his mind had come back to the world, and he realized that he was being drawn, rather forcibly, toward Luke, who was seemingly in pain on the floor!
He hadn't known about Sarah's wish, so he didn't even know to wonder about the fact that he was about to turn into the last thing he'd been thinking about before the wish, but what, exactly, was that?