Considering dash was the first to respond to the thread, then added the "do-over" response later, I'd say he was joking (seemed obvious to me). Actually, I consider ANY do-over response to be a joke, unless there is a valid rule siting with it. Besides that, the question had been asked and answered, so why not add a "dash" of spice to the conversation.
Accept it and move on. No need to continue defending yourself. On this particular subject you are in the boat alone and you're missing the paddles. Plus you've painted yourself in a corner and all you had left to say was "I forgot you're always right." Time to stop. I would expect the next response to be "I know you are but what am I?"
You started all of this by suggesting dash was trolling. "Are you Joking?" would have been a better response. "Trolling" is not a good thing and you better have some support before you use that term.
Look on the bright side, they could have seriously dust rolled your butt, but all they did was say dash is OK. You got of easy, at first.
