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1.
The term for a saggy pair of balls that belong to a gentlemen of the older age set. Normally accompanying a broom dick.
Old guy "Man my balls are starting to really sag"

Young guy" HAHA! You have pendulum balls!"
by BROOMDICKBROS! December 07, 2010
 
2.
Really saggy balls resemballing a science intstrument known as pendulums
That old guy has pendulum balls mommy!
by BALLLLLSAK! December 04, 2010