Have a date where you pretend to be private investivators. First, dress in your best “incognito outfits,” i.e. dark shirts, raincoats, toboggans, etc. Next go into a public area where a lot of people walk around. Choose someone you don’t know to keep and eye on and follow them everywhere they go. The game continues until you are spotted, then duck into the nearest restaurant for dinner and debriefing!