Well OP said opposite sex, so we're assuming the mind stays the same. I'd be one happy freaking bastard. Very very happy. Until it changes back.
To be completely honest, I've actually considered this and came up with "exactly as I am as s dude, only with hips and boobs. Maybe a prettier face. Also bisexual.
Laugh out loud. My first thought was "sex... lots of it". Second thought was "dress like Lady Gaga". When I opened the thread, I saw both of those had been mentioned within the first... 5 posts was it?
1. Flirt with all those super freaking hot chicks who will never look at me since I'm a girl. D: 2. Pee standing up, just for the experience! 3. Have copious amounts of sex with aforementioned hot straight girls. (Um, well, I'd try... But I'd probably be 10x more socially awkward in guy form, so they'd probably just laugh at me when I approached them.) ...Wow, I have such high priorities. Peeing and sex!
^ I'd be sad I couldn't do that. And then I'd probably make out with guys in public and not be harassed.
hmm, I would walk around without a shirt on all day and try to get with some really hot straight girls, damn. Oh, and pee standing up, that would be an interesting experiance lol
probably buy a nice dress that shows off my figure, and wear it while going about my day. Oh and make-up, can't forget that.
Hmm... Wake up. Scream. Wear very baggy pants. Eat a nutritious breakfast. Scream. Jack off. Pee on a tree. Have sex (probably leading to comments of "have you never used that thing before?") ... scream a bit more. That's about all.