n. the penis. (From the name of the metal stick used to measure the amount of oil in an automobile engine. Usually objectionable.) : He held his hands over his dipstick and ran for the bedroom.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Medical Dictionary
Main Entry: dip·stick Pronunciation: 'dip-"stik Function: noun : a chemically sensitive strip of paper used to identify one or more constituents (asglucose or protein) of urine by immersion
[dip-stik] 
