It's simply thanking you in anticipation. In the same way a sign will say "Thank you for not smoking." or "Thank you for not parking here." before you do either.

LabRat :-)



Athos: If you'd told us what you were doing, we might have been able to plan this properly.
Aramis: Yes, sorry.
Athos: No, no, by all means, let's keep things suicidal.


The Musketeers