Mikey's Mistake

Mike looked down at the note and felt like trying out evil villain laugh \#17 You know "Bwu ha ha ha", or was that \#7. Then he just realised something he forgot. "I wish that I would swap swap genitals with the next person of the opposite gender I see," Mikey read, "The genitals will age as if they were on it's original body, and I and the person I swap with develop as if we had our original genitals" He could read the notes himself. "I also wish that I and the person I swap with will get an urge to sex with each other" To make matters worse a voice called out. "Hello..."