A tool used among friends to retain possession of a certain seat. As the name suggest, fives only works for five minutes. After standing up from his chair, the person announces "fives", and then can freely do what he needed to, and when he returns no one is allowed to take his seat during his absence.
Powerful foe of, "you move your feet, you loose your seat."
Rudolf: I need to pee, fives.
==four minutes later==
Rudolf: Get your ass out of my seat.
Schwartz: No Way!
Rudolf: I called fives, schmuck.
Schwartz: ... arr, you got me this time.