Well, if you want to know the gory details, here they are [this, incidentally, applies to all cheap cihcken products like bad nuggets and burgers and stuff, McDonalds are far from alone.] After cutting off the normal cuts of meat like the breast, legs and wings, you are left with a carcass. All the remaining meat on it is obtained either by blasting it off with water, or, more commonly now, squashing the carcass against a fine mesh. the meat exudes out of the other side like a pasteand is scraped off and turned into nuggets (and things like 'lamb flavoured steakets or whateverthey want to call them... if you look at the ingredients those are flavoured with lamb fat and heats but all the meat if chicken). Revolting. But chicken nuggets taste so good.