When you say bye to someone and attempt to walk away, only to realize that the person is walking in the same direction as you, resulting in an awkward silence. Common futile resolutions to avoid the ensuing awkwardness are: walk faster or slower than the person to separate oneself, initiate small talk, check one's phone.
Bill: Alright Norm, I'll get that paperwork for Monday, see ya.
Norm: Bye Bill.
-Both continue to walk down the hall together and wait for the same elevator.
Bill: Guess I had a little premature bye back there huh? -Check's phone