Nobel Prizes are made of gold, and gold absorbs all X-rays. Thus the image on the X-ray machine is completely black. That’s unusual, and TSA agents don’t like unusual things. Astrophysicist Brian Schmidt had this experience:
“Sir, there’s something in your bag.’
I said, ‘Yes, I think it’s this box.’
They said, ‘What’s in the box?’
I said, ‘a large gold medal,’ as one does.
So they opened it up and they said, ‘What’s it made out of?’
I said, ‘gold.’
And they’re like, ‘Uhhhh. Who gave this to you?’
‘The King of Sweden.’
‘Why did he give this to you?’
‘Because I helped discover the expansion rate of the universe was accelerating.’
At which point, they were beginning to lose their sense of humor.
I explained to them it was a Nobel Prize, and their main question was, ‘Why were you in Fargo?’”