Urban Dictionary: B9

3.	B9
	The model number of the Robot from the TV series "Lost in Space". I just bought a really neat talking B9 replica at the science fiction convention, but it broke. Oh, the pain, the pain! buy b9 mugs & shirts robot lost in space dr. smith jupiter ii "danger will robinson!" by Martin Peck Aug 28, 2006 add a video
1.	B9
	An abbreviation for "benign" You can say: "Check my rhymes 'cause my mole is benign" (Scrubs quote) or Check my rhymes 'cause my mole is B9 buy b9 mugs & shirts cancer tumor benign malignant benine by AndyMASH Mar 22, 2010 add a video
2.	b9
	b9 means want to smoke herb one of the meanings- be (on cloud) 9 yo you wanna b9? hell yea son lets get on cloud 9 buy b9 mugs & shirts b 9 b9 bridge be nine by feenbrianwilson May 11, 2009 add a video

4.	b9
	b9 = mate A word that any1 can use and means mate "Oi, b9's get over here" "Yo lend me da cd b9. safe" buy b9 mugs & shirts by Da Kelvinator Jun 23, 2005 add a video