So there’s a family of cavemen, and they’re sending their kid to school so he can get smarter and evolve (yeah, I know, but the cavefamily doesn’t know that). Well, one day after school, the cavemom asks the kid how school was. The cavekid says “OK, but I missed the bus this morning.” The cavedad says “So what did you do?” "Oh, I just caught a ride from my buddy who lives over in Hamilton. The parents are aghast! The mom says "You must never, ever do that again! If you commute with the Hamiltonian, you’ll never evolve!
An electrical engineer, a chemical engineer, a mechanical engineer, and a computer engineer are all driving along in a car, when all of a sudden, the car stops. The mechanical engineer says “Uh, oh, I recognize that sound, that’s a jammed cylinder”. The electrical engineer says “No, you fool, obviously the spark plugs misfired”. The chemical engineer says “Don’t be silly, it’s obviously a fuel problem”. The computer engineer says “Why don’t we all just get out of the car and get back in?”.
And my personal favorite:
A physicist, a mathematician, and an engineer are out hunting, when they spot a deer. The physicist says “This one is mine”. He gets out a paper and pencil, a calculator, and (since he’s an old-school physicist) a slide rule, and calculates the exact range to the target, droppage due to gravity, air resistance, and Coriolis deflection, and determines the exact trajectory needed to hit the deer. One he has his initial velocity, he measures out the exact right amount of powder, takes aim, and fires. But his shot is two feet ahead of the deer.
Of course, the deer bolts, but fortunately, it doesn’t go too far, and they’re able to catch up with him. The engineer says “OK, you’ve had your shot, now let me show you how it’s done.” He gets out his rifle, and it’s equipped with a laser sight, an infrared rangefinder, an apochromatic scope, a theadolyte, a compass, a GPS, and a bunch of other do-dads that he’s not sure what they do, but they look cool. He adjusts all the gauges, and makes sure all of the dials are centered, and when all the lights turn green, he fires. But his shot is two feet behind the deer.
So the physicist says to him “Well you were talking trash about my shot, and you couldn’t do any better yourself! What’s that all about?”. But the mathematician interrupts "Hey, what’s the big deal? Between the two of you, you hit it dead on!