For me personally, punishment is not play. The playful discipline that Daumon mentioned, yes. But I'm a pain slut, so Master never uses spanking, flogging or whippings on me as punishment, since that would actually be a reward, something that I want. Real punishment is not playful, is not fun and is not something that I want. I always do my best not to disappoint Master or cause Him to punish me, because I hate disappointing Him and I hate receiving punishment from Him.