"Dump Truck Tipping"

Ok, so for those of you who have not seen CARS the movie I have to catch you up.
Mater, the tow truck, takes Lightning McQueen "tractor tipping". They go out to a field where the tractors are sleeping and Mater honks his horn. The tractor is startled awake makes a kind of mooing sound and then proceeds to fall over on its back side and then makes a sort of farting sound with a plume of smoke coming out of its smoke stack.
Well Mathias was playing with his dump trucks and when Andrew and I turned around this is what we saw. We're not sure if he was imatating it or not. Though he does love to watch Cars a lot.