These almost always feature a very young, very skinny, bare-legged girl (who may or may not be in the movie), and there will be a man pictured in between her legs. Subtle.
Don't expect any more creativity from the script than is evidenced by this very old poster cliche. Also, there's almost no chance you'll be seeing that girl naked, so this poster achieves the double whammy of skeeving out half the audience while disappointing the other half.