I had always had the impression that when people say, "correct me if I'm wrong", their underlying meaning is not to ask for correction but to stress that, "I'm 100% sure of what I'm saying", especially during heated debates.
Is that so? Please "correct me if I'm wrong", hahaha.
(there will be a follow up question if it is indeed so)
Best Answer
It's used both ways – it can indeed be an expression of confidence, but it can also be a genuine request for clarification. And even in the former case, you can usually assume that the speaker is in fact reasonably open to being corrected. (Though maybe not in a "heated debate"!")