Michael O'Leary, boss of budget airline Ryanair, suggested replacing the cargo hold on his airplanes with beds in a move that would allow for a "mile high club".
The airline chief has previously said it was "likely" that Ryanair passengers could be charged "at some point in the future" to store their bags in the plane's cargo hold.
The airline chief's saucy suggestion came during his first ever "#GrillMOL" Twitter chat, after being asked if he had considered fitting seats in the cargo hold.
"Not seats but beds. Mile high club anyone?," he wrote.
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The airline chief was in a similarly mischievous mood in response to other questions for the "#GrillMOL" session, quipping that the airline was working "as we breathe" on charging passengers' inhalations.
O'Leary's decision to take questions on Twitter from users comes as part of the budget airline's strategy to make itself more open and accessible to customers. The airline recently included a "suggestion form" on its website in order to get tips from passengers on how they could improve their service.
In a chaotic Twitter session in which the Ryanair boss initially forgot to use the airline's #GrillMOL hashtag, O'Leary answered questions on a wide range of issues, including hostile ones.
The Ryanair boss told one Twitter user that the airline's aircraft were "fuelled with Lep[rechuan] wee and my bulls**t!".
Making fun of Ryanair's cost-cutting image, O'Leary told another Twitter user that good questions would be "free" but "stupid ones" would face a €5 additional charge.
Asked for advice on what passengers could call him on one of Ryanair's flights, the chief executive quipped: "Call me genius, Jesus, Superman, or odious little s**t, whatever takes your fancy as long as you fly Ryanair!"