We trained our babies so that if you are close to them and say "bonk," they will bonk heads with you!

I'm pretty sure Olive would have done it even if we didn't say bonk, since leaning towards a baby seems to be the universal signal for, "Let's touch foreheads!" But now she will bonk even without a lean, as long as you say the magic word. Saying bonk to her is one of my favorite things to do!

Does your LO like to "bonk" heads?