U.S. Pat. No. 6,055,910: Toy gas fired missile and launcher assembly.
Flatulence is the accumulation of excessive gas in the stomach or intestine. Because flatulence may be socially embarrassing, it is one of the most common complaints encountered in medical practice. Although a number of factors have been implicated in its pathogenesis, sometimes no cause can be found and it may therefore prove refractory to treatment. Thus, serious discussions of flatulence have led to little more than home remedies, largely empirically derived. Only in the last three decades has there emerged a science of flatology . . . .
A recreational activity practiced by some individuals is ignition of one’s own flatus. This is performed by using a lit match or candle, or a cigarette lighter. So widespread is this activity that there are web sites on the Internet devoted exclusively to explaining proper lighting techniques.
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