Hey! First tab by me (: I did this by ear so I'm not sure if this is 100% correct.
Standard Tuning, no capo.
[ Tab from: http://www.guitaretab.com/a/all-time-low/191418.html ]
|-2----5---0------0---2-----5---0-------0---2-----5---0-|
|----3---------3---------3-----------3---------3--------|
|-------------------------------------------------------|
|-------------------------------------------------------|
|-------------------------------------------------------|
|-------------------------------------------------------|
|-----0--3--2--------3--2-------0--------|
|--3-----------3-----------3-------3-----|
|----------------------------------------| x2
|----------------------------------------|
|----------------------------------------|
|----------------------------------------|
