Park Slope is nuts. Yesterday, it was revealed that Park Slope doormen have been running an undercover (but legal) "Parking Ring" where they hog two parking spaces in order to be able to open one up when a tenant needs it. But wait—that's not even the part that's nuts. The nuts part is that Park Slope residents—having already tried calling the cops—have taken to issuing hand-written citations to the offending cars, which is great. "Uh, yeah, Mom, that'll show him. Can we get going, though? I'm going to be late for school and you just used up all my crayons." If you have a family, love making your own citations, and hate ice cream, Park Slope might be the place for you, and to help you out, we've put together a map of five Park Slope open houses this weekend, all within an ice cream cone's throw of one another.