Or it means that you're having trouble executing the technique and you need your instructor to run you through it. What's really going to show your instructor that you weren't paying attention? Asking for some help, or pretending everything's fine and screwing it up later? Like the old saying goes, the only stupid question is the one you didn't ask, especially when you're training.
as I felt it embarrassing for us to ask the sifu to show us again the move he already taught as it meant we weren't paying attention.