My 15 month old has turned into a monster. She has started pinching. And it really hurts! No good ignoring it doesn't work. She just laughs n laughs n laughs. Firm no doesn't work! Problem started when my elder ones laughed at her for doin it to them but that's when it didn't hurt an it only took one laugh from them for it to continue. They don't laugh anymore they actually cry!! (age8 and 9) also any visitors that come even new kids shes hasnt seen before shes doing it to them! I try n stop her before shee about to do it but she jus laughs. I know it's a phase but what can I do to help to stop it speshly with visitors!