look up any word, like the eiffel tower:
Big Waste Of Bandwidth.
This site, in particular, is a BWOB.
by Frosty J. Hammer July 16, 2008
Boyfriend WithOut Benefits

A best friend that you are considered to be pretty much dating, but that you give no sexual benefits.
"That Eric, he is so your BWOB. He does everything for you but you give him nothing"
by Sydney Slaughter Dan March 28, 2012