Poor planning

Upon learning I was a warlock when I turned 18, I quickly learned about the power of sex, or more specifically, the power of male cum. It seemed like I needed to be touching cum with my fingers to make any of my spells work, and if it got stale it wouldn’t work. This made some things, like making my dick bigger, easy. Other things, like getting revenge on Betty, who posted online what a loser I was after she shot me down for homecoming, were harder. I had to slip off during homeroom and beat off to get some. Still splashed inside my pants, I grinned when I ran into Betty in the hallway and turned her into a mouse. I couldn’t help but laugh as I saw her flee terrified down the hall.