The Rotten Bagpipe is a variation of the well known "Dutch Oven
". As apposed to wrapping the blanket over the ol ladies head, "The Rotten Bagpipe" uses more stealthy delivery system. On one of those bad days where you're having hot gas....load the sheets appropriately. Slowly lift your foot to create a tent in the sheets. While this is happening, make sure to create an exit to the tent and have it aiming right at the ol ladies nose.
Once in position, release the foot allowing the tent to collapse, shooting hot toxic ass gas right into your loved ones face.