they're only after one thing

they're only after one thing

A phrase typically said to females as a warning that males (usually teenagers) are only interested in sex. Stay away from high school boys, they're only after one thing!
See also: after, one, thing
Farlex Dictionary of Idioms.
See also:
  • fallen woman
  • eggs is eggs
  • a penny for them
  • great minds
  • great minds think alike
  • best foot forward
  • (one's) best foot forward
  • be twiddling (one's) thumbs
  • be twiddling your thumbs
  • (as) sure as eggs (is eggs)