Fuck that. I wear sandals all the time. Hell, sandals and black socks... how else am I expected to dress when mowing my lawn?
Mandals are gross and should only be worn on the beach. Sneakers are perfectly acceptable for everything else. Unless you are a guy who takes meticulous care of his stanky-ass feet, why would I want to see them?? Sick.
I've never understood this one either. I've read a lot of these "man rules" lists and always tend to agree with most of them, but what is so bad about sandles? When it's hot outside and I'm wearing shorts, I don't want to put on shoes and socks and have sweaty feet all day. As long as you're smart about it and don't wear sandals when they aren't appropriate, what's the big deal?
Parallel parking (which requires backing in) is part art and part science. The asshole is the one who, when there are two adjacent open spots on the street, pulls in and parks in such a way as to take both (if you ever lived in a city where there are no meters on side streets, but a lot of apartment buildings that put the ratio of cars to parking spots at about 10:1 in your neighborhood, you know what I'm talking about). Or, the asshole on the block who's house has a driveway and garage, but he parks on the street anyway. The suburban version is the guy who takes two spots in the parking lot so no other vehicle gets too close to his. The closer to the store, the bigger the asshole.
To add to this, if you share a residence/driveway with someone, leave the driveway for the person/people who actually move their cars now and again. If you don't use your car, park in the street. I live with an absolute loser who violates this rule regularly, and sees no reason to change.