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 bloke 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 a $200 note 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 de grass."