Toddlerhood

It's screaming at the top of your lungs when you don't get what you want
Combing through the Tupperware drawer and leaving a path behind you
Laughing that fantastic belly laugh that puts a smile on everyone's face
Finding that you can reach things you never used to be able to
Discovering that your stool will get you onto the couch
Discovering that the refrigerator door opens quite easily
Discovering that using your stool in the refrigerator can get you many things

...in this case, spinach :)