My son turned evil

Up till eight months old, Lijah did nothing, literally. He laid on his back, didn't roll over, didn't scoot, nothing. He only laughed and smiled. Everybody said he was a good natured baby, and... he was.

At eleven months, that baby all knew and loved, is gone. In its place is a little adventurer who won't sit still. In his repertoire:

The skull smack: Don't lay down near him, because he'll put a big grin on and crawl over like he's in love, then, lift his head high up and smack it down into yours. ?!?
The wall smack: Newly discovered by accident, smacking skull into the wall has resulted in a circular motion at the neck to reproduce said discovery of wall.
The flying squirrel: Prerequisite: happy but unsatisfied (I'm a good mommy, so, this happens to be 95% of day). On his knees, he lifts his hands toward the ceiling and then brings them down to mightily smack whatever is in his radius.
The dog bowl dingies: Bored with toys on the carpet? Can't see mom in your peripheral vision? Head to the bathroom with screams of anger and stop short at the dog's water bowl; lift, pour over chest, repeat.
Baking glassware wear: Feeling no fear for the pain he has felt in the past, he continually visits his favorite cupboard and pulls on top of him the pyrex, then finds a stray spoon and drags them into the middle of the living room to make music, where mommy finds the otherwise see-through items by stubbing her toe when the doorbell rings trying to stop the dog from charging the front door.
Skin amusement park: Wants to roll up against any exposed skin, then, after having a sensual fill, pinches over and over and over wherever it is exposed.
"That scream": When grocery shopping, he no longer receives praises; he constantly screams at eardrum-breaking decibels whenever he gets bored, which is pretty much constantly. I get down in his face and scream back at him (when we're at home). Then he pauses deep in thought, squints his eyes in a glare, gives a toothy grin and whines at me for the travesty I have committed.