Intro: Am,G#m tap the pick guard with your finger nails. Bump the guitar body with the base of your palm twice, tap the pick guard with your finger nails. G#m,Am tap the pick guard with your finger nails. F#m,G#m tap the pick guard with your finger nails. Lyrics: Am,G#m G#m,Am F#m,G#m Go, go, go, go Am,G#m Go, go, go shorty It's your birthday G#m,Am F#m,G#m We gon' party like it's yo birthday Am,G#m We gon' sip Bacardi like it's yo birthday G#m,Am 'Cause you know we don't give a f**k F# (azchords.com)