Dutch Bagpipes
Rolling onto one's back (often onto a bed or floor) and holding their legs in the air, spreading the butt cheeks with both hands while alternating a squeeze on each cheek and farting loudly into the air. Works great in an area with lots of people.
"Man, I was chillin on my friend's futon beneath his bunk bed, and things got a bit too quiet, so I busted out my Dutch Bagpipes and played a tune so loud the whole city awoke."
"Look, Chris is asleep, why don't you wake him up with a symphony on your Dutch Bagpipes?"
"Look, Chris is asleep, why don't you wake him up with a symphony on your Dutch Bagpipes?"