Get your britches in a bunch

Meaning

To become unnecessarily upset or worried about a minor problem. It suggests that the person is overreacting to a trivial situation.

Playful, dismissive

Used in a sentence

• Do not get your britches in a bunch just because we are running five minutes late.
• There is no need to get your britches in a bunch over a spilled glass of water.
• She got her britches in a bunch when the store was out of her favorite bread.