Definition: Insincere refusal of a thing that is desired

Even though Walter’s mum was chief cake maker at a prize-winning bakery, Little Billy didn’t much like Walter.

This is because Walter:

(a) was 6 and a half years old (not 7, like any normal person)
(b) was a teacher’s pet
(c) once laughed at him for being short.

Little Billy learned about accismus when Walter brought some of his mum’s chocolate brownies to school.

Billy was famished.

But he said ‘… no, thank you’ and pretended not to groak.