batcrap /ˈbætkɹæp/adjective 1adverb 1noun 1forms 2 adjective1 •(slang, vulgar) Too irrational to be dealt with sanely.What I like is a certain ambiguity in a story, but I've come to understand over the years that that drives most people absolutely batcrap! — 2007 adverb1 •(slang, vulgar) Used as an intensifier, particularly for insane or synonyms. noun1 •(slang, vulgar) Nonsense, hogwash."God, that is such… such batcrap!" Edith exploded. — 1968 formsmore batcrap · most batcrap