Torres has a Liverpool tattoo if im not mistaken, he backstabbed Liverpool so..
I bet plenty footballers out there have tattoos related to their former and present clubs, but surely you can see the significance in Agger getting YNWA on his knuckles during the days where he's being heavily linked with a move away from Liverpool?
I could of course be completely wrong, and he instead got it to show he's got the club in his heart wherever he goes.
... or perhaps he just went on a heavy drinking binge, and woke up all knackerede not knowing what the hell hit him or his knuckles.
We'll see. I don't think he's going anywhere, if it's up to himself at least.