And Chaos Ensues

So we had a really nice evening and dinner, and then in a matter of seconds chaos occurs.  I never really understand how this happens, especially with only one child and one pet.  Our whole day has been off, since Sam was randomly up half the night (not sure why).  So his nap schedule was off, then when he finally was ready for a second nap, the neighborhood kids proceeded to scream and yell outside his window and he couldn't fall asleep.  They also succeeded, when he finally did fall asleep (I smartened up and provided lots of white noise and lullabies), to wake him up again.  Anyway, point being, the whole day was off schedule.  In baby world, that's a lot.  We usually get him down for bed between 7:00 and 7:30.  Tonight, I was brushing his teeth at 7:45, which doesn't seem like a big deal, but tomorrow morning has potential for disaster.  And he hates when I brush his teeth- full on screams, torturous wails, and tears.  I finally release him and send him to the living room to choose a book.  He's still whimpering, when there is silence.  I hang up the towel and go to investigate.  There is a mysterious brown puddle in the dining room, Sam is peering at it.  I peer at it.
"Did Sammy make that?"
Silence.
"Did kitty-cat make that?"
"Kitty maked that!"
(Better of two options).  So it turns out the cat has vomited on a good portion of the dining room rug.  On further inspection there is a skid mark through the middle of it.
I pick up Sam, sure enough, there is cat puke on his footsie pajamas.  Awesome.  I undress him and send him in the nursery to get a new pair.  Now it's 7:55 and I am scrubbing cat puke.
Sam returns minus pajamas and wants to help.  I send him back to the nursery.
Sam climbs on the couch, minus the pajamas.  I give up on the puke and decide to get the cat outside in case she's sick again.  I find her and have to make it through three rooms, and to the back porch before I can release her.  She digs her claws into my chest and I scream.
Sam laughs.  I drop the cat.  I pick her up again and she claws me and jumps down.
From the couch I hear more laughter and "More!"  I chase the cat across the living room into the hall, into the bedroom and out again.  Sam is now practically hysterical and clapping on the couch.
"Kitty-cat fast!  Kitty-cat run!  Mama chase kitty-cat!"
I capture her again and try running for the door.
The cat jumps down and disappears behind the couch.  I gave up.
Sam kisses my "boo-boos" and scolds the cat, "no hurt Mama!" then turns to me, "kitty-cat fast!" which I had noticed.
Sam got to bed at 8:15, cat is still inside, and I'm pretty sure the rug is stained.