Pollywog: An individual who has not crossed the Equator, who must go through rituals, that sometimes cross the line to be hazing, to become a shellback. This practice can be traced back hundreds of years and is conducted in many countries' Navies across the globe. See crossing the line.
Wog: Short for "pollywog", as in "wog ceremony."
Wog Dog: Sailor acting as a vicious dog and part of the "Royal Party" during Shellback initiation