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One who drives with careless disreguard. Used by truck drivers to describe eachother. Hammer as meant to be the accelerator, Dick as used to be dicking around and driving like a dickhead. Can also be used as Hammer Dicken.
Christina said to her boyfriend " I got behind this Hammer Dick on the freeway.

Or:

Marsha was Hammer Dicken to get home to make supper
by SpdR8ser December 12, 2007
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3
A revered term for a man residing within the south coastal region of Lake Erie to the PA/NY Appalachian Mountain area. A man who finds enjoyment in beer drinking, has outstanding fines at all time with the local/ state government, owns one or more guns, burns his trash, and typically falls within the blue - white collar range according to the 2010 census. A real menace to city folk.
- I just spotted them hammerdicks ripping up State St on them dirt bikes. - Oh Yeah? I even saw one the other day burning his trash which included an old car while drinking a bud heavy with no fucks given.
by US Dep of Definitions May 20, 2016
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4
When you build unbelievable swelling in the tip of your penis after having sexual intercourse for a long period of time in a pool. The tip of your dick begins to look like the blunt end of a hammer while the rest of the shaft looks like a spaghetti noodle.
Man I had sex with her for 6 hours in my pool, when she left I had a hammer dick.
by ITwitch June 25, 2016
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