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; (OK, everybody 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' rollin' rollin', rollin', rollin', rollin'. (Mighty fine, good buddy, let's back the big rig on up now!) 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; (OK, now let's count just 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'. (OK, let's go to the other side of the truck now and count just the odd number wheels.) Oh, there's 1-3-5-7-9-11...13.....15.......17 wheels on a big rig; (Sounds like you might have a flat...I don't know.) (OK, since you're so smart, why don't you try doing it in Roman numerals?) (OK, I will.) Oh, there's I II III IV V VI VII VIII IX X XI XII XIII XIV XV XVI XVII XVIII wheels on a big rig, And they're rollin' rollin' rollin', rollin', rollin', rollin'. (Top that, will you!) (I will now attempt to divide the wheels of a big rig by pi.) Oh, there's 3.1431425679..11...million wheels on a big rig, And they're rollin' rollin' rollin', rollin', rollin', rollin'.