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.
I found like 30 royballs while helping clean up after Farney's
party. One of them spilt on my
shirt and there was 3
cigarette butts in it, I almost puked.