doul
n.— «Douling, my clever friends told me, derived from the Greek word for a slave, and in your first two years at school you could be compelled to do almost any task by either a House prefect—they were called monitors—or your study monitor. These tasks could range from boiling an egg to giving someone a hand job. Monitors summoned douls by stepping into the corridor and yelling either “Dddooooooouuuuuuulll” or “Doul doul doul doul doul doul.”» —by John Peel Margrave of the Marshes Oct. 17, 2005. (source: Double-Tongued Dictionary)