1. When a male has not had intercourse for a long period of time. This is considered to be the cause of a "dusty dick," in which the male's penis is in fact, dusty, from lack of use.

2. To go for a long period of time without intercourse, resulting in a penis covered in dust.

3. To go a long period of time without anything or anyone touching one's penis.

4. A layer of dust covers one's penis boxers. This follows a dry spell.
Maybe, but you're the one with the blue balls and a dusty dick.
by FinNdFerb November 4, 2010
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Tim: yo I fucked Marge.

Phil: nigga you got that old puss

Tim:she’s only 76
Phil: bro you got dusty dick now. Prolly look like baby powder on that shit.
by Boys ain’t shit April 24, 2018
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When you put your cock into a car exhaust, then pull out your schlong, then a girl sucks of the dust and soot
I want Kendall Jenner to give me a dusty dick dip.
by GrandmasChesticles February 8, 2020
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