When my son was born, I received this as a baby gift.
It's a teether that vibrates when you bite down.
Needless to say, however cute it is, my son did not use it. Til now.
He has been biting me over and over (his eye teeth are coming in!) and despite discipline,
he refuses to quit. So I pulled this out of my stored baby toys and lo and behold, he has been BITING it! And I mean BITING it. You know, with the whole head quivering because he's biting so hard! It's hilarious! Ahhh my new favorite thing!