Cat Noises?

Last week I was at the gas station with a dump truck full of roadstone--dump trucks have a lever on the bed outside just behind the driver's side that releases the tail gate for dumping--and the man pumping my gas started to fiddle with it, and while I was a little suspicious of it, the safety chain was still attached so I just kept watching in the side mirror. Then it got weird: he started tugging on it and making cat noises every time he tugged at it, and not just little cat noises, but loud cat noises for about thirty seconds, so I started to think he may be retarded or something, but then he came over and asked me in a completely normal voice what would happen if he pulled the lever, and I curtly explained that he would have a gas station with a lot of gravel and he stopped. In New Jersey, you are not allowed to pump your own gas, but how is this guy qualified and I am not; I have eleven years experience pumping gas in Ohio when I pumped my own gas. Don't get me wrong, I like having someone else pump my gas, but it's on principle that I complain here--I would just like the option to pump my own gas if I deem someone else incompetent to do so, or if I have to wait more than ten seconds for them to do so...or if they meow.