Oh Fluff Aaaages ago some poor innocent joined the Tavern for a while and knew about horses. She didn't like the horses they use for filming - said they looked wrong, and specifically that they held their heads too high to look confortable as riding horses. Which led to lots of
'okaaaaaaay' responses.
So it's now a constant purile giggly thing, even though the poor ex-wench involved has long since left the tavern. (And who can blame the poor girl - she was just saying what she thought.)