As Jackson is rummaging through the fridge, the medicine cabinet, or under the sink:
Mom: Jackson what are you doing?
Jackson: Mom, I'm looking for stuffin!
(as in 'I don't like you to mess with stuffin there')

Mom: Jackson, dinnertime, we are having hot dogs and mashed potatoes.
Jackson: Hot dogs and mashed potatoes? Oh my gosh thats cool!
Apparently mom needs to work on expanding her vocabulary. And if you haven't tried hot dogs and mashed potatoes you haven't lived.

After coloring on the table with a marker:
Mom: Uh oh Jackson, are you supposed to color on the table?
Jackson: No, only on paper.
Mom: What happens if you color on the table?
Jackson: Mom takes it away and says 'stop it!'
Sadly true, but the answer I was looking for was 'time out.' I guess mom also needs to work on her anger management.

There are a few words that Jackson say's incorrectly that I will not be correcting anytime soon.
Waterlemon (watermelon)
Arbelly (Library)
Lemon Lime (Emmeline)
Who cares if he gets a wedgie in kindergarten? As long as I get a good laugh out of it, it's worth it.