Lyrics:

Oh, there's 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 wheels on a big rig!
"Okay, ev'rybody now!"
Oh, there's 1 2 3 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 wheels on a big rig, and they're rollin, rolin rollin,
rollin, rollin rollin.

"Mighty fine, good buddy! Let's back the big rig, we're goin up!"
Oh, there's 18 17 16 15 14 13 12 11 10 9
8 7 6 5 4 3 2 1 wheels on a big rig.
"Now let's count jus the even number wheels!"
Oh, there's 2 4 6 8 10 12 14 16 18 wheels
on a big rig, and they're rollin rollin rollin
rollin rollin rollin

"Let's go to the other side of the truck
and count just the odd number wheels."
Oh, there's 1 3 5 7 9 11... 13 15 17 wheels on abig rig!
"Sounds like ya might have a flat, i don't know..."
"okay, if you're so smart, try singing them in roman numerals."
"Okay, I wil."
Oh, there's I II III IV V VI VII VIII IX X XI
XII XIII XIV XV XVI XVII XVIII wheels on abig rig,
and they're rollin rollin rollin,
rollin rollin rollin

"Top that, will ya?"
"I will now attempt to divide the wheels of a big rig by pi."
Oh, there's 3.143125679 -11... million wheels on a big rig,
and they're rollin rollin rollin,
rollin rollin rollin!