LEAVING THE TOILET SEAT UP (WHY)

Do you ever walk into a bathroom after it was used by a boy?? Well I did today...

How about a lifted toilet seat and a unflushed toilet. Not paying any attention and rushing, I went into the bathroom right after my son came out and sat right down onto the lifted toilet seat and unflushed toilet...You can imagine. How disgusting is what I yelled.
I do my best with my son to teach him manners and not be disgusting. I don't get it - How hard can it be to flush & put the seat down when you are finished. I don't know what else to say or do.
I guess boyzwillbeBOYZalways.....

Can anyone help me out? I would love to hear your feedback. You can leave your comments below.