A person who continues, at length to continue on a topic that has exhausted its usefulness to the rest of the crowd, to
expound and
explore the dead topic.
Someone who, despite being told the topic is a "
dead horse" continues to converse on that topic.
I can't believe Tim is still arguing about
toothpaste with Bob, Bob agreed with him
20 minutes ago! What a
dead horse Jockey.
