penny for your thoughts UK /ˈpɛn.i fɔː jɔː ˈθɔːts/US /ˈpɛn.i fɔɹ jʊɹ ˈθɑts/ phrase1 •Used to inquire into the thoughts and feelings of another, especially when the person appears pensive or conflicted.And she said to Gerty: —A penny for your thoughts. —What? replied Gerty with a smile reinforced by the whitest of teeth. — 1922