This is a video of "She's a Mystery to Me" from the Brooklyn Bridge. At the end of it Bono says "i'm not quite sure how to end this." And then you can see Larry saying something to Bono but you have to read his lips to make out what he is saying.
http://youtube.com/watch?v=IiVgHR-s33A&mode=related&search=
http://youtube.com/watch?v=IiVgHR-s33A&mode=related&search=