Five spot

What is the origin of five spot or ten spot? It is a way of asking to spot money or borrow money?

Ex.
Ted: Can I get a five spot from you?
Gina: Sure thing Ted. $5 coming your way.

It's an American usage, and just means a bill of that denomination in dollars, regardless of how it's used. Without context, a five-spot, for example, or a fiver, would mean money in that denomination. You could also have a ten-spot or a tenner, but you would probably not hear anyone speak of a hundred-spot or a hundreder (which is a C-note), nor a fifty-spot or fiftier. That normally would be called "a fifty," just as there's no twentyer, but rather "a twenty." "Twenty-spot" has been heard, but is probably somewhat rare.

I don't know why "spot," although it could be thought of as analogous to the (e.g.) five-spot playing card, which actually has five pips.

According to the OED, the expression has been in use at least since 1846.
SS

Not sure where Smokey is, but fiver and tenner are British 5 and 10 pound notes as far as I know. I haven't heard that used of US currency. Five-spot is rather out of date though people sometimes use it in a joking fashion much like calling a quarter (25 cent piece) 2 bits.