blonde moment
/blɒnd ˈməʊm(ə)nt
/noun humorous
An instance of being silly or scatterbrained: we all have our blonde moments...
- Well - they weren't the absent-minded blonde moments I said they were.
- I would like to say I had a blonde moment, but having infuriated large chunks of the readership last week, I think I'll avoid upsetting anyone else today.
- This morning I had a definite blonde moment, when I thought that the cord dangling from the ceiling in the bathroom turned the shower on.
Origin
1990s: from the stereotypical perception of blonde-haired women as unintelligent.