does not hold water

(idiom) a statement does not appear to be correct or reasonable

Example Sentences:

A: I believe that dinosaurs were on the earth 6000 years ago.
B: That theory doesn’t hold water. The earth isn’t that young!

When she told me that she thought the sun revolved around the earth, I told her that it doesn’t hold water. The earth moves around the sun!

Media:

Similar idioms:

1. water under the bridge
2. hold one’s tongue
3. get into hot water
4. hold on
5. fish out of water
6. bring up
7. throw cold water on
8. blood is thicker than water
9. down-to-earth
10. keep one’s head above water
11. forgive and forget
12. make hay while the sun shines