And by the way, if you're planning your transgressive day in the park, read this first.
You also can't be beaming ear to ear like John Edwards, looking like a total prick for making light of a grave situation. You certainly can't have some gonzo grin like you're still high... No, you need something in between. You need the smirk. Look at Samantha Ronson, Nicole Richie, or David Bowie. They say, "Yeah, I know I'm in the clink, but I'm still awesome and I'm going to get out of this, and I did, in fact, shoot the sheriff." That's what you want: bemused badassery, a photo that says you know you're going to get off because you're famous, pretty, and, perhaps, innocent.