making out in public places

I've started doing this thing with a friend of mine where we go to really public places, like street corners, parks, shopping malls--places where there's lots of people--and make out and just generally act like one of 'those' couples. It's not that we even like each other like that or even that we're really great friends. But there's the dirty looks we get, and it's like it's more fun than it would be if we were actually just one of those couples. Usually we get lunch after. Sometimes we sit on the same side of the table and hold hands and quietly giggle and kiss each other every few minutes, but mostly we figure we've had our fun for the day, so we talk and watch people. Sometimes I wonder how many couples are doing it because they think it's funny. I actually mind less when I imagine them laughing about it later.