Sing this to the tune of "I'm On A Boat" from The Lonely Island. It is a song about being retarded and sitting on the roof of a bus parked in the schoolyard with a friend. No sex, no making out, no drugs, no smoking. Just literally two idiot schoolboys sitting on the roof of a parked bus, for no reason.

Wheeled School Bus - Right Front

I'm On A Bus! (Roof of a Bus Mix)

Oh shoot, Get your Sears Toughskins ready;
It's about to go down;
Every dork in the place hit the fracking parked vehicle;
But stay on your mommiefracking toes;
We running this, let's go.

I'm on a bus, I'm on a bus;
Every teacher look at me;
'Cause I'm sitting on a bus (Roof of Bus);
I'm on a bus, Roof of a bus;
Take a good hard look;
At the mommiefracking bus.

I'm on a bus mommiefracker, take a look at me;
Straight sitting on the roof parked by the jungle gym;
Busting denim butts sittin' on a parked bus roof;
Throw a rock at our heads, 'cause we be a pair of goofs.

Take a picture, trick, at these dorks, blintz;
We're burning our butts on hot metal roof 'cause we be pair of gimps;
We got our coke-bottle glasses and our pocket protectors;
We're sitting ducks, You straight informing the Teacher.

I'm sitting on a hot metal roof, getting blisters and zits;
This bus is totally immobile, a chair for a pair of twits;
This isn't NASCAR, this is as slow as it gets;
No sex, no smokes, two dorks, don't you ever forget.

[Chorus]

...

I have no idea what possessed me to sit on the roof of a bus. It was just asking for trouble with absolutely no chance of payoff. It only further cemented the opinion of our classmates at the two of us dorks were social misfits.