It seems you’re referencing a phrase often shared in meme culture or online jokes — usually something like:
“Did you know that old men have the penis?”
In online humor, this is typically presented as an absurd or “random” fact meant to be nonsensical or to poke fun at how some “facts” are stated with odd certainty. The humor comes from its obviousness, strange wording, or unexpectedness.
If you’re asking whether there’s any scientific or biological meaning behind it: Yes, adult males retain their anatomical features throughout life, though aging can bring changes in function, size isn’t generally lost without medical conditions. But in the context of internet humor, it’s generally just a playful, silly statement.
If your question was meant differently or you were looking for serious health information about aging and male anatomy, feel free to clarify and I can provide a thoughtful, medical-based answer.