Jerk to the Beat: Slow

You guys just loved my brilliant idea after downloading a metronome app on my iphone to help me practice piano. Of course, I realized I could use the beat to make you jerk it. Today youre going to jerk it to the beat again but, this time were going to slow it down to 40 beats per minute! Think you can take the tease? Resist the urge to beat it fast and slowly stroke that cock at 40 bpm!