In the meantime, if you do want to take a carry-on to your next flight but you're not planning to travel as light as Lindy, check out your airline's Web site for its carry-on size and weight limitations (and some sites -- like ours -- have convenient charts for this). You'll save time, avoid frustration, and you won't have to worry about the extra checked-bag fee -- or the baggage police.
This work is the opinion of the columnist and in no way reflects the opinion of ABC News.
Rick Seaney is one of the country's leading experts on airfare, giving interviews and analysis to news organizations, including ABC News, The New York Times, The Wall Street Journal, Reuters, The Associated Press and Bloomberg. His Web site FareCompare.com offers consumers free, new-generation software combined with expert insider tips to find the best airline ticket deal.