Lyrics:

Y'all betta look out back dere I'm finnea back dis big ol thang up

Okay Now I need all my ladies to report to tha dance flo if you got a big big ol butt you need to b on tha dance flo 'cause dis iz yo song

(Back it up, Back it up, Back it up, Back it up)
I need all my ladies to back it up
Aye, aye, lets go! Aye, aye, lets go!

(Back it up, Back it up, Back it up, Back it up)
Back dat thang up lyke a tonka truck
Back dat thang up lyke a munsta truck
Back dat thang up lyke a tonka truck
Back dat thang up lyke a munsta truck
Make it drop lyke a 6-4
Make it drop lyke a 6-4
Make it drop lyke a 6-4
Gone an make yo bootie clap to dis gurl

Back dat thang up gurl bend ova an touch ya toes Now jack dat thang up (whoa)
Make it roll like a 24 now pull up to da bumpa babay and make dese niggaas love ya babay
Big bootie gonen doit you drive me krazay now I got sumen 4 ya laday
Go 4ward, reverse, an 4ward again table dance 5 dollaz you kin keep dat hole 10 whuzz up tell dat DJ can you play dis song again I ain't seen a ass dis big since god knows when
Back it up

(Back it up, Back it up, Back it up, Back it up)
Back dat thang up lyke a tonka truck


Back dat thang up lyke a munsta truck
Back dat thang up lyke a tonka truck
Back dat thang up lyke a munsta truck
Make it drop lyke a 6-4
Make it drop lyke a 6-4
Make it drop lyke a 6-4
Gone an make yo bootie clap to dis gurl

I lyke tha way she move her bodie patron an goose inside me she turned around politely
(Back dat thang up lyke a tonka truck)
I looked at 'er lyke whut da fuck Excuse me gurl iz dat yo butt if it iz den dats whuts up
Tho dem muthafuckin' dollaz up
Back it up go an bring it rite back work dat thang and dat bitch thowin' stacks
Tonka truck she gotta ass so fat (uh...)
I ain't seen nothin' lyke dat 36, 24, 36 dammm
Dis gurl here be supa thick DJ Unk gotta have summa dat and I don't giva fuck who you wit

(Back it up, Back it up, Back it up, Back it up)
Back dat thang up lyke a tonka truck
Back dat thang up lyke a munsta truck
Back dat thang up lyke a tonka truck
Back dat thang up lyke a munsta truck
Make it drop lyke a 6-4
Make it drop lyke a 6-4
Make it drop lyke a 6-4
Gone an make yo bootie clap to dis gurl