Once there was a prostitute who had three different
rates based on the following three conditions:

1) $100.00 to do it on the grass.
2) $200.00 to do it on a couch.
3) $300.00 to do it in the bed.

In the morning a British  walks in and slaps a
$100 note on the table. So they went out and did it on the grass.

Soon, an American fellow walks in and slaps  $200 on the table. So they head for the couch and did it there.

About the end on the day, a Jamaican man walks in and
slaps $300 on the table. Happy from seeing the money the prostitute says, "Wow,...you have class"

The Jamaican responds, "Class mi rass... Three times pon the grass."