i found more than 8 different slang words for bathroom, but only 1 that reminds me of a band
the can, the head, the shit house, the asswipe, the ass gasket, the rain closet, the throne, the porcelain throne, the shit room, the shower, the bath, the rest room (although the last one ain't slang)
unless you're really gonna surprise me, I don't think that stonerrock from the 90's (The Heads) is in your music collection?
maybe the Talking Heads? but a talking head is a person on the telly reading the news, not a bathroom.....
but say, only half the bandname means bathroom, Talking Heads could be the band (and you do like them!)
hmmm
two word titles of a record
are we talking a single or a whole album here?
if singles count then Psycho Killer could be the one
are we talking of a common name again or are we talking latin this time?
edit, let's just take a huge gamble and assume that David Byrne & co IS the right band, that Psycho Killer is the record and hence 'killer' the term we're looking for and that it's the nature of the beast:
can't get anymore lethal than this ;)