My strategy is to just go as slutty as acceptable for any vague character.

I’ve gone as sexy cowboy, sexy plumber, underwear model bitten by vampire (the bat onesie is too hot, so I just kept taking it off to reveal shiny metallic reptile print underoos), Dionysus (just a very shiny white piece of fabric wrapped into a skimpy toga and a staff, plus I kept offering to refill drinks), Slutty Jesus (Same as Dionysus, sans staff). More reserved looks have included fully clothed himbo firefighter, and before what’s-her-face went crazy, a very dapper Sirius Black.
This year I’m going as Luigi (the video game character), which is not explicitly sexy, but I’ll probably wind up taking off the shirt at some point. (I poured all my inspiration into my wife’s costume this year. She’s going as a dragon. She’ll be in a leotard with scales, a horned face mask, a cape, and various body chains and chainmail accessories. She’s going to be the bomb. I’m so excited.)