boo

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not say boo to a goose

To be particularly shy, diffident, or timid by nature. Primarily heard in UK. My brother is a very sweet, warm-hearted man who wouldn't say boo to a goose. How can you suspect him of committing this crime? The neighbour's daughter is just the cutest little thing, but she won't say boo to a goose.
See also: boo, goose, not, say

not say boo to a fly

To be particularly shy, diffident, or timid by nature. Primarily heard in Australia. My brother is a very sweet, warm-hearted man who wouldn't say boo to a fly. How can you suspect him of committing this crime? The neighbour's daughter is just the cutest little thing, but she couldn't say boo to a fly.
See also: boo, fly, not, say

not say boo (to anyone)

1. To be particularly shy, diffident, or timid by nature. Primarily heard in US. My brother is a very sweet, warm-hearted man who wouldn't say boo to anyone. How can you suspect him of committing this crime?
2. To not say a word (to anyone); to keep quiet. Primarily heard in US. The neighbor's daughter is just the cutest little thing, but she wouldn't say boo the whole time we were there. I trust you didn't say boo to those coppers about the little side business we've been running here?
See also: boo, not, say

na-na na-na boo-boo

A teasing nonsense phrase typically said by children. You can't catch me! Na-na na-na boo-boo!

boo someone off the stage

 and boo someone off
to jeer and hoot, causing a performer to leave the stage. The rude audience booed the performer off the stage. The audience booed off the comedian.
See also: boo, off, stage

can't say boo to a goose

Rur. shy and not talkative. I was surprised to see Joe so talkative at the party. Usually he can't say boo to a goose. She's a quiet little kid. Can't say boo to a goose.
See also: boo, goose, say

not say boo

  (American informal)
to say nothing She expected the boss to be really angry, but he didn't say boo.
See also: boo, say

wouldn't say boo to a goose

  (British informal) also wouldn't say boo/wouldn't say boo to a fly (American/Australian informal/informal)
if someone wouldn't say boo to a goose, they are shy and nervous She wouldn't say boo to a goose, so I don't think she's cut out for a career in the police. I remember her as a quiet little girl who wouldn't say boo.
See also: boo, goose, say

boo-bird

(ˈbuˈbɚd)
n. a person who boos frequently at games or other public events. The catcher turned and stared right at the loudmouthed boo-bird. Everybody knew what he was thinking.

boo-boo

(ˈbubu)
1. n. an error. (see also make a boo-boo.) It’s only a small boo-boo. Don’t stress yourself.
2. n. a hurt; a cut; a bruise. She has a little boo-boo on her knee.

make a boo-boo

tv. to make an error. (see also boo-boo.) Everybody makes a boo-boo every now and then.
See also: make