In reference to Southern barbecue (of which the staple meat is pork), cooking a whole hog, rather than individual cuts such as ribs or shoulders, is as far as it can be taken.
Rather than a simple BBQ serving small cuts which serve comparatively small groups, a pig pickin' (an event at which a whole hog is cooked and served) easily feeds 50 people. Thus its easy to see how going the whole hog means going all the way.
The origin of the idiom "hog heaven" is based on the happiness pigs experience when they roll in the mud.
I'm in hog heaven, doing a hog on lightspeed! up the butt. Hogg heaven!
it means that person is a metaphor mixer. To go "whole hog" is to put forth 100% effort. To "get your goat" is to make you angry.
to go all out to get someone angry.
do whole hog
The cast of The Whole Hog - 1989 includes: Griff Rhys Jones as Maurice Mel Smith as Giles
Belle's - 2012 Whole Hog 1-4 was released on: USA: 15 February 2013
The closest German term I can think of is aufs Ganze gehen which means to go all out, or to go the whole hog
Hogs are not known to act with self restraint. It is a direct comparison to an animal. Sometimes people act like hogs.
If the hog is "fried" it is immersed in hot oil. You may be thinking of a "hog roast," in which a whole hog is roasted. This can be done in a huge roaster built large enough for a hog, or in a roasting pit dug in the ground.
The Whole Hog Making Terry Pratchett's 'Hogfather' - 2006 TV is rated/received certificates of: UK:PG
This depends on the size of the hog, but unless the hog in question is very small, it would not fit.