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1. dub dub dub
"Dub dub dub" is short for "WWW" which in turn is an abbreviation for "World Wide Web." "WWW," however, contains nine syllables whereas "World Wide Web" contains only three. "Dub dub dub" therefore is a shortened form of an abbreviation for those who don't want to say "World Wide Web."
"Go to dub dub dub, urban dictionary dot com."
by Doug Parks Jun 14, 2004 add a video
2. dub dub dub
A more gangsta way to say "WWW" (World Wide Web). Most commonly used in the hood.
Thug 1: "Yo dogg, where'd you hear about brizzle browsin'?"

Thug 2: "Ah dogg you need to hit up dub dub dub .urbandictionary.com for all that shit."

Thug 1: "Oh fo sho doggy."
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