I think I'll let my dog off of the leash to attack a toddler.
I seriously hope this is a joke. Why would you do this?
His mother never pays attention to him and showing her what could happen will be a wake up call for her.
Allowing your dog to go off leash and attack a toddler is completely wrong. Using this incident to teach his mother to be more attentive is cruel and her child could be seriously injured. Talk to the mother if you're concerned with her parenting but don't let your dog attack the child.
I don't care if it's wrong. I'll let him off the leash and have him maul the poor kid.
You do know if the child gets hurt or injured you will be responsible legally and financially right? Animal control will have your dog put to sleep too with no chance for appeal.