Mike O’Leary, CEO of Ryan Air, is known for his joking around. He was the first to suggest airlines put in pay toilets. Now he’s talking about offering cheaper fares to people willing to fly squatting on close-packed stools.

His theory, if he isn’t kidding, is that by using bar stools instead of regular airline seats, and he could jam another 50 percent more people onto each flight. O’Leary adds that if passengers accept the idea, and with a full aircraft, he can not only cut costs, but also reduce prices.

O’Leary, known for his often disturbing Irish wit, is suspected of joking on the bar stool idea, because he recently came up with the pay toilet in the air idea. He said passengers would use credit cards in slots to activate toilet doors, and be charged from one U.S. dollar on up to an English pound for each potty break. What's next? Airline straphanging?