I think I remember BF tweeting something like « What was I smoking back then ? » about those lines when rehearsing for the IC tour (Shattuck era). Of course they never actually performed the song.
Sad to read people calling The Happening a deep cut and obscure. I reckon it's probably the best song on the album (maybe, too many to choose). Cyrus has good taste, I think she covered The Replacements a few years ago too.
She was alright in one of the latest episodes of Black Mirror, and she did a cover of a NIN song (Head like a hole) I suppose anything goes these days in the world of music.
Acid Reign, about as obnoxious British (punk) thrash metal from the 80's as you can get, now sort of reformed and have a new album out in a few weeks. They've done a cover version of a Suzanne Vega song on it (Blood Makes Noise) and she agreed to sing one line on it (recorded and sent by email). About the most unlikely musical collaboration I could ever have thought of.
Their official twitter put up something related to this song, I was kind of hoping it was a rehearsal hint. A Miley Cyrus is significantly less exciting - nice lyric to get though!