Well, in one context, it means cute.
When said as "Bo" like BOW and arrow.
But when said B.O. then it's body odor.
So much to learn, young master Grakthis.
"Bo", in this case, is just an exclamation.
Outside of America, there exists a (terrible) type of music called "Garage" (that's gah-ridge). A garage artist by the name of "Artful-Dodger" created a popular song called "Rewind" (or maybe "Re-rewind", I forget) featuring Craig David (who you've probably heard of). The lyrics went "Re rewind, when the crowd say
bo, selecta!" (*short pause to allow the reader to absorb the profound intellectual content of the above lyrics*). Craig David was rightfully mocked for this in a comedy show called "Bo Selecta!". The image on the front of the T-shirt is the "Craig David" double from the show. "PROPER BO!" and "I TELL T
HEE" are phrases from the show. Ever since then people have been using the word "bo" in this way.
But I guess you'd really need to see the programme.
-Kev