This was the first ever Green Day song released that featured no electric guitar. It is also in some pretty wacky tuning, somewhere in-between E and Eb. Closer to Eb.

If you’re not familiar with an Asus2 chord, its basically just an A open chord (three-fingered version) where you remove your 3rd finger to sound out the open B string. It’s used very briefly in this song, but creates a nice little accent.

Green Day - Words I Might Have Ate, chords and lyrics