I found these great pictures over at the U2 360 2011 picture-thread and found a couple of photos lying in a row that I thought could make a good story. So I made one in captions.
Larry: (thinking to himself) Oh, man. I desperately need to take a shit...
Larry: ...Hey, wait now. Maybe if I just fart a bit it will get me some relief.
Larry: Wait for it...
Larry: Ahhh, there we go.
Bono: Oh god, what's that smell?
Bono: Arrrgh, that smell! It's horrible! Edge, help me with your magical superpowers!
Edge: I'm trying, I'm trying!
Edge: It's not working!
Bono: Uggghhh!!
Edge: Larry! What the hell did you do that for? Shame on you!
Larry: Sorry, Edge. I didn't mean to do any harm...
Adam: There, there. It's alright, let me comfort you.
Bono: Thanks, Adam. I've always been able to count on you.
A few songs later at the end of the show...
Larry: I'm sorry, Bono. From now on, I will try to fart only before and after shows, and during encore breaks.
Bono: It's ok, Larry. We all make mistakes. I'm just glad we're all friends again.
Larry: (thinking to himself) Oh crap, I must take a shit again...