Do yourself a favor... wear the brown pants.
For those of you who watched the leaked trailer, you won't be disappointed. For the rest of you, who either waited for the official release or missed the leak... you also won't be disappointed. This trailer is 100% Deadpool. It's got metahumor ("don't make the supersuit green... or animated!"), foul language and crass jokes, and plenty of harsh criticism of Deadpool's face. Personally I think it looks like a moldy peach and a hairless cat hated each other very much, but the stork dropped something off anyway.