While we had introduced Squirt to a sippy cup when he was about 4 months in our attempt to familiarize him with sippys (read: let him PLAY with the sippy), the actual proper transition to a sippy
Spud has, in the recent months, picked up a very annoying habit of sounding like a spoilt brat who is just barking orders and being demandingly rude whenever she asks us for something that she wants. She