Song: Ben Wah Balls
 Band: Blink 182
 Album: Cheshire Cat
 Tabbed by: Dan(dumpweed69@hotmail.com)
 (this riff is right, you have to listen pretty close to hear it)
 G:------------------------------------------------
 D:------------------------------------------------
 A:-55555555555555999777755555-999777555555--------
 E:------------------------------------------------

 G:------------------------------------------------
 D:------------------------------------------------
 A:-5555-------------------------------------------
 E:------7777-5555-3333----------------------------
 You just alternate around those 2 riffs throughout the whole song.  
 There might be more, but Im not sure, those 2 riffs are like 90% of the song atleast.