penisological clock

A penisological clock may also be known as an erectile clock. This penis aging clock is a "sex predictor" that can be used to measure the age of a guy when he can resume having an affair with another person outside of his marriage. It can have some psychological consequences as it can be tied to relationship difficulties, erectile dysfunction and masculine self-image.

Me: I know what you're capable of.
Him: I hope I'm not so old when we get together again that I can't perform.
Me: Yea, your penisological clock is ticking. :)