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1.
When one gentleman greets another by gently and accurately touching the heads of their penises together. An uncircumcised man must pull back his foreskin to accomplish the greeting correctly.

Bryant gave Dave a hearty hand shake and Bumped Nelsons when they re-antiquated after many years.

Not to be confused with crossing swards or playing swards
Bryant gave Dave a hearty hand shake and they were Bumping Nelsons after they were reacquainted after many years.
by The Real Berman July 09, 2011