Seems God was just about done creating the universe, but he had two extra things left in his bag of creations, so he decided to split them between Adam and Eve.
He told the couple that one of the things he had to give away was the ability to stand up while urinating. “It’s a very handy thing,” God told the couple, whom he found under an apple tree.
“I was wondering if either one of you wanted the ability”.
Adam jumped up and blurted, “Oh, give that to me! I’d love to, please oh please, oh please, let me have the ability, It’d be so great! When I’m working in the garden or naming the animals, I could just stand there and let it fly. It’d be so cool, I could write my name in the snow! Oh please God, let it be me who you give that gift to, let me stand and pee, oh please...”
On and on he went like an excited little boy who had to pee.
Eve just smiled and told God that if Adam really wanted that so badly, that he should have it.
It seemed to be the sort of thing that would make him happy and really wouldn’t mind if Adam were the one given this ability.
And so Adam was given the ability to control the direction of his micturition while in a vertical position.
Adam was so happy that he celebrated by wetting down the bark on the tree nearest to him, while laughing with delight all the while.
It was so good. “Fine,” God said, looking back into his bag of leftover gifts, “What’s left here? Oh yes, multiple orgasms...”
I haven’t yet looked at the thread to see whether this is involved, but I know several Iraqi Muslim families and it’s part of their religion/culture for males to sit down to pee.