Lyric discussion by rachelmansell 

Cover art for Philomena lyrics by Decemberists, The

The lyrics are indeed wrong, but whatever.

Colin has come out and said it is about oral sex so here's my interpretation building on that. I think it's about a guy acting as a submissive for a dom (Philomena). He has some intense sexual experiences with her, but it's become a routine and it's not really working for either of them anymore, and all he wants to do is to go down on her.

I like how this slightly dark (if bdsm is still considered dark) undertone contrasts with the light happy feeling of the song, which paints an innocent tone for such adult themes.

My Interpretation