Ends of hot dog buns

Factual Questions
1

I’ve seen people break off and discard the ends of hot dog buns before eating. The buns didn’t seem to be significantly longer than the hot dogs, so I’m wondering if anyone knows why this is done.

It may be a coincidence, but all the people I saw doing this were black.

2

They are usually dried out. The bun ends, not the black people.
Sometimes they also have too much of the white flour collected on the ends.