A bastardization of "gorp", like gorp, to gorpo is to mount an individual from behind and push his/her head down repeatedly, while the two individuals enthusiastically twirl their arms in concentric circles. In addition, the "gorpoer" also attempts to grope the "gropoee". Traditionally non-consensual; however, the interpretation and experience depend upon the context.
That rabbit is totally gorpoing that duck, somebody stop it! The rabbit and duck are gorpoing... That's hot.
Definition 1: An unnatural rape involving sea-slug jelly. Definition 2: A mixed race of humans descended from sea slugs and humans through gorpos who gorpo innocents.
HUMAN: Your mom gorpoed my little brother yesterday you sick freak! GORPO: It was for the greater good of humanity
HUMAN: The gorpo-sea-slug race is tyrannical and racist!!
GORPO: You're being racist against the gorpos.
A Gasious secretion or fart underwater which makes bubbles rise to the surface of the water
Oh Shit B...Did that man just let loose a gorpo??