What do you think about it?
Most Helpful Girl
A friend of mine one time described it as it meaning that during sex a nice guy will finish last and will make sure a girl orgasms first.
My take on the saying is that girls leave the last guys in the dust and will date the jackass guys first. When a number of bad boys or jackasses break their heart they go to the end of the list and date the nice guy as a last resort. Like the song https://www.youtube.com/watch?v=xfeys7Jfnx82