One Delta Ten Tango, or "1D10T" is a military acronym used to describe an idiot, when speaking to that particular idiot, specifically because he/she is an idiot. Usually spelled out phonetically in order to confuse said idiot.
SGT: Your new career field is 1D10T, or One Delta Ten Tango, Private.
Private: Uh, what's that mean, Sergeant?
SGT: (sigh) Never mind.
Private: Uh, what's that mean, Sergeant?
SGT: (sigh) Never mind.
by MizStewy January 12, 2008
"Dave did not know why his computer would not work. I fixed his 1D10T error once I pushed the power button."
by mrmulan February 13, 2005