Definition
To feel extremely embarrassed or awkward, to the point of not knowing how to act or where to be.
When I realized I had said the wrong thing, I didn't know where to put myself.
At the awards ceremony, when I was called up to the stage to receive the award, I was so nervous that I didn’t know where to put myself.
Seeing her ex-boyfriend show up with his new girlfriend, she was so embarrassed that she didn't know where to put herself.