My mother's cat took his time. It was purring for a minute followed by a surprise attack. He liked belly rubs, but he was an asshole on top of that.
Ah, well all cats are different. A past cat of mine would run up to me and jump on my lap requesting pets, and belly rubs. Then after a while he would start trying to bite me, while still sitting on my lap, and also refuse to leave my lap.
