Oh Blast!

and other similar exclamations.
I was stuck for ideas until I remembered this morning's frustration.
I was concluding our lounge refurbishment by scrapping an old and much repainted electric socket with a gleaming new one.
The sole purpose of the lower item is to safely house the upper, I foolishly thought they were standard items, but these two wont fit together, the upper is just too big.
Blast was the mildest word I used.
Thanks to Laurie54 for hosting MM this month.