I am relieved (no pun intended) to find that I am not alone with the Mogpee affliction.
I have never understood how I can drink one mug of coffee and then discharge what seems to be a factor of ten within 2 hours.
At least if you are a Chap the World is your urinal.
As already mentioned, I think a heady mixture of vibration, excitement and the general euphoria of enjoying such a fabulously Politically incorrect vehicle take their toll.
Someone, somewhere, will come up with a Mogpee solution one day perhaps. I am keeping my eye on the Alternative Parts List just in case....
We are lucky to be able to enjoy such marvelous vehicles -- to pee or not to pee.