blalala是什么意思？

正确的是blah blah....表示很无聊或者不想仔细说的意思

下面列举几个用法

1 I feel blah. — adjective equivalent to "apathetic," related to the above mention of the February blahs

2 Blah, blah, blah, blah… - to show irritation towards someone who speaks monotonously or on a tedious topic. Additionally, may be a placeholder for describing a bunch of writing

3 Also, when I… blah… - to show that the speaker forgot what he/she was talking about

4 Blah you! — as a replacement for a (usually monosyllabic) expletive

5 Hmmmm… blah — to show feelings of indifference

6 Sometimes people say "blah blah blah blah blah" to represent their monotonous attitude.

7 This tastes so, I don't know, Blah? - to help describe a lack of any specific flavor, used mainly to indicate it's flavorless.

有etc的意思,
通常用于描述某人讲得话.

用于表示他说了一堆废话，或者没人在乎的话。
或者吹牛等等.

总之若某人说的话被转述为blah blah blah了，肯定不是好事