beulah is a euphemism for a boob. although most people probably won't immediately get what you're talking about, they'll understand the connotation.
beulah is also an indie band. C:
EX 1: "get your big beulahs off the keyboard"
"whoa, look at the beulahs on that chix0r! i think she might be a DD."
person 1: hey, recommend some bands to me
person 2: why don't you try beulah? i heard they're good.
person 1: byu what? who?
person 2: B-E-U-L-A-H. it's an indie band.
person 1: oh...okay. cool.