Jerk to the Metronome Beats

Are you ready to jerk to the beat with Ellie? She wants you fully nude and ready to play! It's simple. You'll keep pace with her metronome app. You must make it to the cum countdown without having an orgasm. Once she says 1, you're free to get off! If you don't make it, you owe her a tribute of your choosing. Any size, it doesn't matter. You won't lose though, right? ;)