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?"