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That caused me to have a massive cremasteric reflex.
This is how it works and is tested:
"In the case of the cremasteric reflex, the afferent limb of the reflex is by way of the genitofemoral nerve and the efferent limb is by way genitofemoral fibers to the cremasteric muscle. The result is that by stroking the skin on the medial side of the thigh next to the scrotum, the scrotum is pulled up on that side. The spinal cord segments involved are L1 - L2."
In real life it means if you are about to be kicked in the nuts your body has a refelx arc that tries to protect the boys by elevating them outta the way. The "three adams apples" if you will.
I'd tell ya why one hangs lower than the other, but this site has rules.
The 'Bonker