I have had my 8 year old son pee on me.
My 8 year old son is in diapers and not potty trained.
My 6 year old son is also not potty trained and I'm okay with it.
Both of my boys wear diapers and are not potty trained and they also drink from baby bottles and use pacifiers too.
I figure if they decide to give the diapers up, bottles etc then they will but if not I'm okay with that.
They are home schooled so they don't have to be potty trained.
Both my 8 year old son and my 6 year old son has peed on me when changing their diapers and they laugh and I think it's funny as well.
They seem to love getting their diapers changed and love wearing diapers.