Done?
Get your faithful metronome and timer.
Try to insert one of the two testicles into the cylinder.
Set the metronome to 50bpm, and the timer to 3 minutes.
Start, in rhythm with the metronome, press,hold pressed hard and rotate, press, hold and rotate, put as much power as you can, continue until time is over.
Once finished repeat the operation with the opposite testis.
ahahahah
Did you break your balls?