Achin is the one who doesn't care whether there is one or not, he is the master of both calm and anger. Very smart and clever but no one can feel the cleverness, everyone should be afraid
Refers to the agonized feelings/actions --- i.e., extremes of "pain and pleading" that may include severe stomach-cramping, extended bouts of tearful wailing/imploring for more-filling menu-choices, etc. --- of a "pork 'n' poultry" lover who is unexpectedly being forced to "go vegetarian" or otherwise follow a much "leaner and blander" diet than the rich-flavored grease-and-carbs-laden feasts that he'd been accustomed to chowing down.
(from author Steven Kellogg's "modernized" version of the classic children's tale "Chicken Little"): After being convicted of assorted heinous carnivorous crimes, bacon-'n'-eggs-loving Foxy Loxy was totally in the throes of tortured "achin' 'n' begs" when he learned that his diet in prison would consist of green-bean gruel and weed-juice.