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

1. $10.00 to do it on the grass.
2. $20.00 to do it on a couch.
3. $30.00 to do it in the bed.

It's in the morning when a Brit walks in and slaps a $10 bill on the table.

So they go out and do it on the grass.

Around noon, an Frenchman walks in and slaps a $20 bill on the table.

So they go for the couch and do it on there.

About the end on the day, an American walks in and slaps $30 on the table.

Happy at seeing the money the prostitute says, "Wow,... you have class"

The American responded, "Class my ass... Three times on the grass!