Because he wanted to win the "Nobel" prize!
A. Betty White.
Because he didn't want to stub his toe when he kicked the bucket!
Because the tomato sauce couldn't Ketchup.
Turn off their Nintendo and go to bed.
Because it was Na HA! Get it? Because Na=sodium and N/A=not available. Seriously, this is good clean fun.
I don't know, I'm no scientist
He was out standing in his field.
Because he wanted to win the No-bell prize!! Sorry, I ll walk out