In the Friends episode "The One With All The Haste" Chandler approaches Gunther and says:
Yes, Gunther, can I get two cups of chino, please?
to which Gunther replies:
Good one.
which suggests that it was a joke.
I understand that it's a wordplay on "cappuccino" and (probably) "chino" trousers, but I don't seem to get the joke.
Could someone explain?