People usually use this term for whenever it can apply to really anything ranging from bad to good. Using ruba dub dub applies to any situation.
“Hey shawty can I get your number?”
“Sure ruba dub dub big guy”
Dubs is short for the abbreviation wtf. As the first letter is W, it is shortened to dubs. This word was invented by Noelstrom, a great young Australian.
Bulldog: I lost one of my testicles while knife-fighting an orangutan in army training
Noelstrom: DUUUUUBBBSSS (Dubs). Bulldog, you're a random kid
a dub is a Dried Up Bitch that no one would find attractive
Man, that old lady is one ugly dub.
wheels with dubble spin to them after the ride stops rollin'
rollin on dubs (even while stopped ;)
Bling bling for your fly ride
I got juice in my ride, and I'm rollin' on dubs baby!
really really really cool. beyond cool. exceeding the state of being fucken awesome.
"dude, my hair is getting so long. its pretty dub."