{n.} A funny happening; a silly situation. - Usually used with "no". * /John's failing the test is no laughing matter!/ * /We were amused when our neighbor's cat had five kittens, but when our own cat had six kittens it was no laughing matter./
LAUGHING MATTER
Meaning of LAUGHING MATTER in English
Dictionary of English idioms . Словарь английских идиом. 2012