Mxtabs [http://www.mxtabs.net]
This is the bonus track on Dookie. Wait a while after F.O.D. to get it. Really simple, funny song, if you get the lyrics. 

Standard tuning; EADG

(Note: Each beat is a whole note, meaning you hold it for 4 counts)

G-----------12---------12---------12---------12---------12---------12---------12-----
D------12---------12----------12--------12---------12---------12---------12----------    (Riff 1)
A------------------------------------------------------------------------------------
E------------------------------------------------------------------------------------


G---13--14----13--14----13--14----13--14------------------------
D----------------------------------------------------------------                (Riff 2)
A----------------------------------------------------------------  
E----------------------------------------------------------------

G-----------12---------12---------12---------12-----------------
D------12---------12----------12--------12----------------------                 (Riff 1)
A----------------------------------------------------------------
E----------------------------------------------------------------

G---13--14----13--14----13--14----13--14------------------------
D----------------------------------------------------------------                (Riff 2)
A----------------------------------------------------------------  
E----------------------------------------------------------------


I was alone, I was all by myself,
No one was looking, I was thinking of you,
O yeah, did I mention? 
I was all by myself, all by myself, all by myself,

I went to your house, but no on was there,
I went in your room, I was all by myself, 
You and me had, such wonderful times,
When I'm all by myself, all by myself, all by myself, (repeate several times)