UK folk may argue that pants are worn beneath trousers or skirts, or indeed just worn on their own but lowered somewhat for porn-surfing, and that therefore this is a crock. But they're wrong.
Al: Ah, that's trousers man!
Employee: Dear boss, I can't come into work today because I'm feeling somewhat trousery. My Blackberry will be on if you need me.
I tried to recover some sectors on my hard drive today, now it's *completely* trousered.