Whie originating with Marvel Comics
loveable monster The Incredible Hulk, the term can also
applied to almost any character who undergoes a transformation that drastically upgrades his size, power and level of mass. Often, but not always, accompanied by damage to their clothing
or an increased level of musculature. But a straight increase
body growth without any added muscle, or a sudden increase
in various physical attributes such a womans breast size can also
be considered "Hulking out".
When exposed to a full moon, a Saiyan who still retains his/her
tail will often HULK OUT into a giant, out of control primate.