Be caught on the hop phrase informal
Active form: catch (someone) on the hop.
To be surprised because one didn't expected or was not ready for something.
We were caught on the hop by the fierce storm. Honestly, none of us expected a storm of such magnitude.
He is always tardy in coming to class. Therefore, we were all caught on the hop by his early coming today.
I was totally caught on the hop knowing that he squandered such a great chance.
Being so scared, confused, and astonished that you can't think or do anything.
To have eyes sticking out in amazement.
An exclamation given to express the feeling of disbelief in something that has occured
Caught by surprise
To make a group of spectators feel extremely enthusiastic, amazed or excited
The origin of this phrase is not clear.