My son is 6 years old and still uses the bathroom on himself

Hi,my daughter is 4 1/2 and sometimes forgets to pee,hehe.She says shes to busy playing.It is true that when a child gets "too into"what they are doing that they will automatically go.She even did a peepee in the bed the other morning,she was dreaming and in her dream she had peed,so really she was peeing in the bed.I just laughed,what else can you do.I wouldnt take anything away from him,but tell him what others would think and if his friends would play with him if they knew what he does.This will be kind of a small guilt trip on him.Ive done things like this and it worked on my daughter.My daughter would try to go outside if she was playing too much and i told her to go in the house because she will get worms in her butt and its gross!She beleived me and know she takes the time to "FLY"in the house fast for it.You have to twist things for them to beleive it,they beleive anything at that age almost anyway,haha.But not everyones alike though and what worked with me,may not work for you,but theres no harm in trying though,right?:)