If I do Say so Myself clause
To praise yourself in a modest way
I'm a good painter, if I do say so myself.
The cake is delicious, if I do say so myself.
We are having the best robot here, if I do say so myself.
I am doing a good job, if I do say so myself.
To say, or believe something or someone that seems completely crazy, delusional, or stupid
You spent 1000$ on a new pair of shoes! It is insanely crazy. You need your head examined.