Who knows?
By this do you mean the ability to tell the wet ones from the dry ones, or are you referring to one's ability to maintain control via a certain circular muscle a given quantity of compressed "gas?"As far as the ability to discern between the relative dampness, I think that is more a function of blood alcohol content than age. In my own scientific studies I have found that it age or sex has little to do with actual numbers. It seems the more the CNS is depressed, the less the CNS is able to control the BMS. YMMV.
In terms of the ability to maintain a volume of compressed gas, that seems to be a matter of preference. I have found that some people try to discreetly expel excess amounts in secret only to be betrayed by the acute ollifactory abilities of those they are in the company of. Others seem to not care one bit how much gas they express, but rather they seem proud of their ability to reach amazingly high decibel levels when playing their butt trumpet. Again YMMV.
Fuggedaboutit. Live dangerously...
Abrignac wrote: