Doing "the arcade machine" is the act of Finding a
woman/man, bending them over and inserting a quarter into their asshole. Then proceeding to have intercourse with them for up to 25 minutes, or till game over (you finish)
Once the "game" is over, you may move onto the
next person, or insert another quarter and play again.
Guy:
hey babe wanna try the arcade machine?
Girl: uhhhh what's that?
Guy: *slides a quarter in ass* We playing pole position, and I'm cumming in first place