In what way could I dress 80's?

The Duran Duran, Spandau Ballet, Michael Jackson "Beat It" look or anything New Wave.

Stone wash jeans. Any shirt with a chinese collar.

See if you can get a "rats tail" for your hair - like that guy in Square Pegs (Marshall?) - with Sarah Jessica Parker way back in the 70s or 80s? That's slowly coming back.

Go with the Duran Duran look and top it off with the trilby hat. Be game and add a bit of make-up?

Have fun!

neon t-shirt with cut off sleeves (doesn't have to be neon) OR sweatshirt with sleeves cut like a t-shirt

Acid wash blue skinny jeans (once again, doesn't HAVE to be acid wash) OR baggy, parachute-like pants

White rolled over socks

White, chunky tennis shoes

Oh! and you should tuck your shirt into your pants

that's just what first came to mind, though. There are several other 80's looks for guys.

if i remember the 80's it was more punk rockish lol if you look up people like the group duran duran that will give you a clue lol

dude! You should totally go as Napoleon Dynamite.. and if you have a friend who's also going get him to go as Pedro!