Most of us have experienced it at one point or another. The person in front of you on board a flight reclines their seat. Most of us just suffer through it or politely ask the person in front of us to stop crushing our legs.

Not so for one man on board a United flight from Newark to Denver. He came prepared for any would-be recliner. Armed with the Knee Defender, he would make sure no one would crush his legs on the flight. He attached the device on his tray table on the back of the seat in front of him. When the woman in front of him couldn’t recline her seat she became angry and reportedly threw a cup of water in the man’s face.

The two passengers were seated in United’s Economy Plus section, which gives you extra leg room for a fee.

The argument between the two eventually led to the plane being diverted to Chicago. Both passengers were removed from the plane and not allowed to reboard as the plane made its way to Denver. Neither of the passengers were arrested.

As for the Knee Defender, this incident has sent a surge of traffic to its website. It loads, but it is slow going. For $22, you to can save your knees. You might catch a glass of water to the face and a diverted flight, though. So use at your own discretion. Oh, and the airlines aren’t too keen on devices being used to prevent seats from reclining.

The image above is not of the two people in the incident. Image credit: Getty

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