To have a large amount of excess lard in or around the neck region of the human body. Commonly referred to as "Gravy Neck". There is no known cure for the common Diekmann . Side effects may include increased urge to snowboard,skateboard and/or scratch vinyl.
"holy sh*t look at the diekmann on that guy!"
by anonymous mouse March 22, 2008
Can you define these popular missing words?