You're welcome, and thank you for the compliments.
1) what would the scientist be thinking as he watches the snake start to swallow the guys shorts and whats inside.
Well, I suppose it would depend on what sort of person the scientist is. We know he's mad. He may have chosen this guy because he was well-endowed, and he just might be thinking, "That'll teach him," or "Not so hot, now, are you?" Or, if his thoughts go in a different way, he might become aroused by what he sees.
2)Would the shorts and whats in them be vissable on the exrays .would the scientist see it being disolved if he recorded the digestion on his large computer system.
Yes, if his machine were complex and gave detailed pictures (I assume it does), but it would happen in the first few hours.
3) Once the snake goes back to it`s resting place ,the scientist recovers the snakes droppings to examine them in more detail ,How large might they be.
There would be several gallons. Here is what they would look like in general:
4) Once he starts to examine the droppings what all will he find in them .
They would look like the photo above, except the hairs in them would be the color of the guy's hair, and the shorts would also be visible, though faded.