What possible excuse do you have for losing a match to an identical twin? You are literally equipped with the exact same physical tools. It’s gotta be a massive hit to the ego when you can’t make excuses for yourself. So what do you do? You project the blame on your other self. A shot to the nutsack between strangers is the work of a true scumbag. But rules of society don’t apply to flesh and blood and a nut tap is an endearing act of brotherly love. Plus, the stomach-churning pain that comes with a sack tap is a piece of cake compared to the subtle, everlasting pain of losing to your clone. That shit can follow you into adulthood.
[h/t For the Win]