A one woman show

Man boarding metro holding his phone with the walkie talkie on (woman yelling on the other end).

The man switches to his earpiece; listens for several minutes and says:
"First of all, this is a two-way walkie talkie, not a one-way monologue machine. With all the yaking you're doing I can hardly get a word in edgewise."
-Red line metro, Rhode Island Avenue stop