This is a clip I found of an exchange between Senator Al Franken and Senator Joe Lieberman.
Basically, he's telling him that his time is up on the podium.
Everyone knows how much time they are given, and they've all prepared their speeches well ahead of time, so you know that you need to time your speech.
Senator Lieberman tried to slip into filibuster mode, but apparently got spanked and sent back to his chair.
