Okay, this is just weird: I just had to google the line "I could a tale unfold whose lightest touch will harrow up thy soul..." The damned thing's been stuck in my head all afternoon, and I couldn't for the life of me remember what it was from. And there it was, all annotated for me.
So, I get songs stuck in my head all the time, but who the hell ever gets lines from Hamlet stuck in their heads? And I somehow managed to combine it with the if clause from "To His Coy Mistress," so I ended up with "Had we but world enought and time, I could a tale unfold..." I think any geek points I lost yesterday have just come flooding back.