The phrase refers to content focused on interactions with unrealistic size differences, typically in an SFWfashion. As the name implies, these interactions usually happen with a giant character, and a tiny character, though ordinary human-sized characters are generally accepted in the mix.
The attraction of a man to a kangaroo for sexual purposes. Usually drawn towards the pouch itself instead of sexual orifices, the large underbelly or gunt is equally arousing.
I can't watch Crocodile Dundee without pulling a Giannetta. Dude that Joey was fucking hot!
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the USCoast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.