A course with multiple stations, where each station allows for masturbation in different positions. As masturbating in the same position can limit capabilities during sex with a partner, a course improves skills of jerking off at various angles.

Named by Brian Sterling, but conceptualized by Adam Carolla. During Adam’s Podcast in Chicago on Feb 3, 2013, he discussed setting up a course for his son, to ensure he did not end up addicted to the same position every time.
I setup an ob-testicle course in my bedroom. I start at the edge of the bed one day, then move the shower the next day, then over the toilet the third day.
by Sonoma Sterling March 24, 2014
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However, these are extreme uses of testicle cuffs. More conventionally, the device pulls down the testicles and keeps them there during stimulation, which has a number of benefits:

Making the penis appear longer. Pulling the testicles down and away from the base of the penis stretches the skin over the base of the penis and pubic bone, exposing the additional inch or so of penile shaft that is normally hidden from view.

Improving sexual arousal. While some men may be aroused by the feeling of being "owned", the physical feeling of stretching the ligaments that suspend the testicles has an effect similar to the more common practice of stretching one's legs and pointing the toes.

Preventing the testicles from lifting up so far that they become lodged under the skin immediately adjacent to the base of the penis, a condition which can be very uncomfortable, especially if the testicle is then squashed by the slap of skin during thrusting in sexual intercourse.

Delaying or intensifying ejaculation by preventing the testicles from rising normally to the "point of no return". It is much harder to reach an orgasm.
by 1234567890abcdefghij June 30, 2020
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Highly sensitive, vulnerable, oval-shaped sex organs that men have between there legs. Testicles are meant to be kicked, slapped or squeezed!
Just as he was about to cum, Jess squeezed Jake’s large testicles and ruined his orgasm.
by __Ari__ September 23, 2021
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The location in a males lower region to store urine. Can be found just below the penis in an out-hanging sack.
I kicked Jimmy so hard in the dick hole that his testicles released pee.
by Soviet Russia 1912 December 09, 2017
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