it's raining catsanddogs = أي أنها تمطر بغزارة We use this idiom to say that is is (or was) raining VERY heavily. (It doesn't mean that cats and dogs are falling out the sky!) Examples: "The weather was horrible on Saturday. It was raining cats and dogs all day." "It's really awful weather outside. It's windy and is raining cats and dogs." http://www.angelfire.com/on/topfen/idioms01.html

Imagine rain that is so heavy that you can't imagine that it is only water. Must be something heavier... like cats and dogs? Other languages use different items: tractors (Slovak), chair legs (Greek), earth and sand (Japanese), cobbler's knives (Irish Gaelic), toad's beards (Portuguese), shoemakers' apprentices (Danish)... arrh, here's the list I found: www.omniglot.com/language/idioms/rain.php (I like the literal Korean expression... experiencing rain in Korea makes one understand the Korean's inherent dislike of any rain.)

haha it means that it is raining heavily

it is an idiom and it means: raining heavily

lotta rain :P