You shouldn't wear diapers if you're an adult.
Jim has been reading about fetishes on the internet and comes across a diaper fetish while alone at home.
Jim wants to try out how a diaper feels.
Jack briefly puts on a diaper before taking it off and throwing it out.
Jack puts on a diaper and wears it for a long while, surprising his girlfriend when she gets home.
Jack realizes that he does not like the feel of a diaper and nobody finds out that he tried this fetish.
Jack's girlfriend is no longer attracted to Jack and decides to break up with him.