Giant-size X-Men: Nightcrawler #1 - Hickman and Davis

[From The Shadows]

Kurt should have bothered thinking for two seconds before he initiated contact with someone whose mutation made casual touch a potentially painful subject. He also berated himself as an idiot for forgetting that point, recall.

Well yes, that happened after the joking - when Rogue stops him from whacking into a tree when she pushes him off and then calls her his hero, after, he jokingly asks to kiss her as a reward and she drops him into the water because of it. But he took it very seriously when he realized what he had done. I'm thinking about those that came after Rogue on the subject of the asking.