People Who Stick Their Hand Into The Closing Elevator Door At The Last Second...

HATE 'EM!

AND they usually have 2 or 3 other stragglers who pile in behind them.

It's why they seal the hatches in submarines when there is a hull breach!

There should be Elevator Captains. And a wheel to turn so that door shuts entirely.

"You seal that door! You seal it now because if one more gets in, they'll all get in! SEAL IT NOW OR WE ALL GO DOWN!!"