An opened but unfinished can of
beer left out until it's warm. A full royball is a
beer that has been opened and then never touched again. Royballs are considered a huge waste of
beer and an act that brands you as a pussy. Understandably, the last sip is considered backwash, sauce, foam, froth, or some other undesirable description and it is
o.k. to leave a tiny bit in the can equivalent to a sip. Anything more than a sip left in the can is considered a royball. An addendum to the "man-
code" should be: thou shall not leave royballs.