Message:
When coaches describe their jobs at different tennis camps, tennis
resorts, etc., they distinguish between teaching players who really
want to improve, and teaching at a hit and giggle resort (or camp)
where the customers are just on tennis vacation and really are not
looking to work hard on tennis.
Obviously, most coaches prefer to teach seriously, rather than feed
balls to the hit and giggle crowd.
I have heard the phrase used of mixed couples in these situations, not
just of women.