Is it normal to fart when you’re laughing hard?

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boy-hand-on-head-iStockYes. We all swallow air throughout the day when we’re swallowing, and bacteria in our stomach make additional gas from some of the foods we eat. This gas has to come out somehow – either as burps or farts. When you laugh very hard it can force the air out of your rectum quickly – hence the laughing fart.