Some rubber and plastic fetishists have an affinity for diapers and rubber pants. In the case of disposable diapers, this attraction would be to their crinkly plastic backing. In the case of cloth diapers, it would be towards the latex or pvc of the pants worn over them.
Adult Babies and Diaper Girls
Ageplay or age play is a form of roleplaying in which an individual acts or treats another as if they were a different age. Ageplay is role playing between adults, and involves consent from all parties. Portraying any age can be the goal of ageplay, from babies, to the elderly. Usually this involves someone pretending to be younger than they actually are, but more rarely can involve assuming an older role.