Unsportsmanlike behaviour can be anything from reckless tackles, to swearing at the referee, to farting. Yup, farting.
According to goal.com, Adam Lindin Ljungkvist was given a red card after farting loud enough for the referee to hear.
“I needed to fart, I had a bad stomach,” he told Lanstidningen Sodertalje. “So I just farted. Then I received a yellow card and then a red.”
The referee who handed out the punishment says he believed the fart was a provocation against another player.