How do you teach your LO not to climb on chairs, sofas, furniture, etc? K can get on top of everything now, and also learned to flop herself all over the place after a weekend with her older cousins. She doesn't quite understand the difference of hard and soft yet and I'm terrified she'll fall off the sofa and hurt herself. I don't mind her climbing and sitting on the sofa, it's the jumping and flopping all over part that freaks me out. She's hit her head and fallen a couple times and doesn't seem to care or remember. My friend's daughter did this and broke her collarbone.

She thinks timeouts and NO are funny. Any suggestions?