James Whipple said he had two "really big beers" at the Boise, Idaho airport. While on a flight to Salt Lake City on March 7 he wanted to use the cabin restroom.
The captain had declared it off-limits during the short flight because a light wasn't working.
Whipple said he had used the cabin restroom before the plane departed but had to go again and finally reached for the air-sickness bag.
"It was like I had no choice," Whipple told The Salt Lake Tribune, which posted the story on its Web site Friday.
No other passengers noticed Whipple using the bag, but a flight attendant asked him about it and told the captain, who called airport police.
Whipple was questioned and took a taxi home to Sandy, a Salt Lake City suburb.
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