He really knows how to throw an insult!

We came home from the shops and I walked in the front door first and this was conversation that followed:

Jakson: Mummy, why did you open the door? That's my job!
Me: Sorry Jakson, I needed to get the shopping in quickly
Jakson:Well that's not your job, it's MY job and you have to wait for me
Me: Well I'm allowed to open the door too!
Jakson: No you are NOT
Me: Excuse me but I have the keys, do you even have keys? (yes I know this was petty but I was getting annoyed too, lol)
Jakson: well you're not a strong engine
Me: Yes I am, I am the strongest engine!
Jakson: (now getting very angry) NO YOU ARE NOT, you're just a coach (that's a pretty bad insult, not just a slow engine but to be called a coach is pretty bad, lol)
Me: I'm Stanley (Stanley is the strongest engine and I knew this would cut deep)
Jakson: You are not Stanley, only I'm Stanley....you are...(looking very angry while he thinks).....just a kip!
(a kip is the cart that the trains pull and is at the very bottom of Jakson's insult list, behind slow engine, coach, trouble truck and very last a kip! lol)