Difficult: (Adjective) Of a person not easy to please or satisfy.

Britney Spears pissed off concertgoers at a Vancouver stop on her Circus tour last night when she walked offstage 15 minutes into her set complaining that the arena was too smoky, and didn't return until more than a half hour later.

Cigarette smoke from the crowd was blamed, with a female voice announcing to the crowd, "The building is awfully smoky. It is uncomfortable for everyone on stage, including Ms. Spears. Please extinguish all cigarettes - this is a non-smoking building, and the show will resume when the smoke on the stage is cleared," the Vancouver Sun reports.

Until the agitated crowd settled down, GM Place was filled with piped-in intermission music played at hockey games - which, one concertgoer told PEOPLE, left the fans "really pissed off. The break in the concert ruined it for everyone. The vibe was gone." (Source)

Don't get me wrong, I'm a nonsmoker and I hate -- hate -- having to breathe other people's cigarette smoke. But doesn't Britney Spears, um ... Smoke? I'm pretty sure she does. So what's the problem here? It's not even like she's really singing, for chrissakes. What else pisses Britney Spears off these days? I guess don't be caught around her with Cheeto dust on your fingers or a Frappacino whipped cream mustache either. And whatever you do, don't even think about talking in a whacked-out British accent in earshot around her. That could set her off like a damn bull in a china shop.

From a Newark show last month: