last worder
A person who insists on having the last word in any conversation. Multiple Last Worders in any meeting can result in the meeting becoming an unproductive eye rolling snorefest.
Sue: I wish that Brian and Joe would stfu, I have work to do.
Bill: Good luck with that, battling Last Worders have no concept of time...
Bill: Good luck with that, battling Last Worders have no concept of time...