The sign all mums need on their bathroom door

Having children has many rewards, but doing so also means you have basically signed a waiver revoking your rights to going to the toilet alone – ever.

However, this handy sign is here to help.

The sign posted on the Momma Helping Mommas Facebook page will change your life, but also help your children decide if the "pressing" matter really can wait until you have exited the bathroom.

"Ask yourself this question before knocking . . . Can I survive the next two minutes without mum?" the note says.