fart riddle
"Hey, guess what??!?"
"What?"
"P-p-p-p-p-p-p-p-r-r-r-f-f-f-f-f-t-t-ttt!"
"What?"
"P-p-p-p-p-p-p-p-r-r-r-f-f-f-f-f-t-t-ttt!"
It's really too bad to waste --- i.e., merely release it quietly, without any fanfare or "heads-up notice" --- a perfectly good "saved up" or "accumulated" gas-pocket, so it only seems sensible to make a fart riddle out of it.