flea in one`s ear
an annoying hint, an idea or answer that is not welcome
Our boss has a flea in her ear about changing the way that our holiday schedule works.
Tips to get ready for Foreign Trip
Tip your hotel housekeeping staff
While you can leave it every day on the pillow, most staff is instructed not to move money or personal items, so they might not pick it up. If this is the case, just leave it in a prominent spot when you check out.