What is meant by Lemon Experience? I am not sure that is this the place to ask this question, but I heard of Lemon Experience on Mac. What does it mean? is it some hardware failure or software issue?
I believe the phrase you've heard is probably in reference to a faulty/dud piece of equipment, as per the definition:

"(informal) a person or thing, esp. an automobile,
regarded as unsatisfactory, disappointing, or feeble"


I don't think it's something Apple or Mac specific, and in fact is probably more often used with non Apple products.