O is for

Oh
Oh Dear
Oops
Ouch
or
Overzealous,

We had a "proper man" come yesterday to do some work in the garage, which involved drilling the wall. He didn't realise that it was only a single skin of brick and drilled for a double! Being on the inside he didn't realise the effect his enthusiasm was having on the outside.

There are far worse things happening elsewhere in the world.

He's coming back tomorrow with bricks and mortar to put things right.