TDSU
n.— «I even survived unmolested the sharing of a tent on an ITC camp (ITC = Initial Training Corps) in Wales with a housemaster who was to go on to achieve notoriety at another public school for his near manic enthusiasm for TDSU beatings (TDSU = Trousers Down, Shirt Up).» —by John Peel Margrave of the Marshes Oct. 17, 2005. (source: Double-Tongued Dictionary)