"Surprised face" refers to the facial expression someone makes when they are caught off guard or extremely shocked by something unexpected. It usually involves wide open eyes and raised eyebrows. Full definition
We do, and there may be a few surprised faces when we share what we have. (kindlenationdaily.com)
I guess I went over my limit without even knowing it (insert surprised face here). (aleciamariana.com)
So wish you have Kev's surprised face on camera:) My project that I think will take a month seem to drag out for years (our bathroom). (theletteredcottage.net)