From Longman Dictionary of Contemporary Englishbe laughed out of courtbe laughed out of court (also be laughed out of town/business etc American English)MAKE FUN OF if a person or idea is laughed out of court etc, the idea is not accepted because people think it is completely stupid We can’t propose that! We’d be laughed out of court! → laugh
Examples from the Corpus
be laughed out of court• It happens in part because our youthful efforts to cooperate in the realization of myth / truth are laughed out of court. 