Abbreviation for Bohemian Bourgeois. People who were hippies in the sixties, grew out of that, got a computer, and a 70 hour work week but still wanted to be "kinda funky" and "see the world". so they wear long skirts, grow a skullet, buy veggies at the "market" and fill their homes with overpriced expensive crap from 3rd world countries. To get that 'exotic look'.
"Check the bobos and their giant african carvings!"