Like the act of slapping hands aloft in celebration, often seen deployed in bowling alleys by embarrassing parents who have achieved something that in sporting terms is fecking simple - akin to sneezing, this relates to the usually unwelcome brushing of balls, man on man..mid threesome.
"I caught a glint in john's eye and I knew he was in her arse. I hopped on top and slid into her gently. As my balls brushed his, I screamed - HIGH 5!!!!"
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