Suggestion to providers...

Advertisement in backpage, or like media channel, like so...

(On the night of a Cowboys, Rangers, whatever home game)
"Come &*%$# a Cubs Fan"
The pic could be you celebrating in the visitors jersey, or maybe just a hat. You would have more bizness than ever.

Just a thought.
HAHAHAHAHA! I don't know if that's the most brilliant idea ever, or a terrible one. Probably a bit of both. Either way, I love it!