Who's Smoking in the Office Bathroom?

Walking into the bathroom today at work, I saw a sight I hadn't seen since high school – cigarette butts and ashes scattered all over the floor in one of the stalls. Talk about a flashback. But it got me thinking. What's the back story on this one? I work in a nice professional office building off Dupont Circle, so who exactly is smoking in the bathroom? We've got a really nice smoking patio out back with chairs and a garden. Why get your fix in the stall, then? Here are all the scenarios I could think of:

- One of the executives is having a mid-life crisis and instead of buying a Porsche, decided to smoke in the bathroom to feel 16 again

- The office building hosts proms on the weekend (They do have a great catering service)

- The cockroaches in D.C. have a nicotine habit

- A plumber was smoking on the job (most probable, right?)

- Someone just wanted to piss off the janitors with extra clean-up duty

Oh well. We'll never know. Some things are best left to speculation. If you have any other ideas, post them below. And lay off the smokes...at least in the bathroom.