Some of the most important discoveries in medicine came from brave people experimenting on themselves. Jonas Salk tested his polio vaccine on himself and his family. Isaac Newton poked a blunt needle into his own eye socket to understand how we see light. And using their own bodies as test subjects, the Redditors on r/CumBiggerLoads have determined that a combination of zinc, pygeum, L-citrulline, and lecithin is the “holy grail of cum.”
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I can honestly say I've never been so bored that I started playing with my own spunk.