Mexican Minute/New York Minute

[Bapopik at AOL.COM]

"You have one Mexican minute."
--tour guide to traveling etymologist, October 22

   Wow!  Only a Mexican minute to see all that stuff at the Anthropology Museum!
   A New York Minute is, of course, a very short amount of time.
   A Mexican Minute, I now know, can be about five minutes.  It is certainly longer than a minute.
   Is this in the RHHDAS?
P.S.  Margaritas, beautiful women, perfect weather--I'm dyin' down here!