I was an adult before I saw someone ELSE light their darts.
I really thought it was just an urban legend.
My buddy set his carpet AND his jeans on fire when he was 17. If he’d have burned his ass off, I still would have laughed. LOL!
Fixed it for ya. It's very important when lighting farts to either drop trou, or be wearing very light/permeable shorts. Otherwise some or all of the fart gas gets trapped in the pants, and when lit, can catch the pants themselves on fire, and/or burn one's posterior.
I learned that by watching someone make the mistake, as a teenager. For some reason, I've never successfully ignited my own farts. Must be my diet.