crazy, wet and wonderful

Today was awesome! Aidan turned into a sensitive, spastic stunt man. He drops and dives and climbs as usual, but now he cries, cajoles and tantrums his way into a sucky and a seat on my lap. Sweet sensitive boy- he hits Henry on the head and then when Henry cries (and boy howdy, he cries) Aidan starts to wail- so Hen cries harder and then we all end up in a pile of tears and buggers on the floor. On the bright side of things- Henry and Aidan do play well together, more often than not. They share toys, switch toys and have taken to working together to reach things they are NOT supposed to be near.
Also, for the past few days, Aidan has been taking off all his clothes when he wakes up from his nap. He's quiet when he gets up- and then he starts talking with Henry- So thats when I spring into action making lunch and preparing the milk and fruit brigade- only to go in and find Aidan- demurely sitting in the corner of his crib, stark naked, legs dangling. Today, pee all over the floor and his freshly laundered pre-nap clothes and diaper. He jumps up fake crying and jumping all over the crib like some sort of hairless howler monkey. Gad. What stage is this?