Tried Something New Last Night

So last night, decided to spice things up with a little spanking. Yeah, we've been married for years and thought I was past all that silly stuff. But my wife had this kinky idea in her head about being punished and it... well, let's just say she enjoyed it more than expected. Now I'm wondering if this is something normal couples do or if we're total weirdos. Any advice? Should I try again?