Q-tip cruise
n.—Gloss: a pleasure trip aboard a trip, taken mainly by senior citizens. Note: So named because they have white hair and resemble the white cotton ends of Q-tips. «It was in mid-September 2006, the final cruise of the season for the ship before the rotation down the coast and through the Panama Canal and into the Caribbean for the winter: The Q-Tip cruise, as it is called, for all the white hair.» —“‘Q-Tip’ cruise was the investment of a lifetime” by Bradley McClain Express-News (San Antonio, Texas) Feb. 22, 2008. (source: Double-Tongued Dictionary)