Penis Knot

I have been curious if anyone has ever tied their penis in a overhand knot. It is the simplest knot possible. I tried when I was young and failed, but not by much, and always thought someone must have done this who possesses even a slightly longer organ. I was always too embarrassed to ask anyone through the years and thought that Reddit might have the answer or guide me in the right direction. I've only been able to find joke posts about which knot to use for preventing pregnancy and frequent urination. I can't imagine nobody ever did it as the tissue is definitely capable of flexing like that if only there was enough of it.