It's a joke people. Lighten up.
And yes, it is kinda poking fun at engineers and physicists. For the physicist, it's their way of dealing with unexpected outcomes, and for the engineer, it's partly being wrong, and partly claiming what they expect. It also pokes fun at the lack of a formal proof procedure, where they just try a bunch of values and if it holds true for all the values they try, then they assume it holds for all values.
Geez, I feel liked I've just killed the joke now.