Am I the mansplainer?

On a getaway with the kids, my wife challenged me to a game of ping pong. We start playing, and goofing around. Whenever she is going in for a smash, she shoots it way beyond the table. After 7 or 8 of these, I mockingly ask her if she knows, that she needs to angle the bat to smash. Al of the sudden the mood changes, and she asks “are you really mansplaining how to play ping pong?” I actually thinks she’s joking and replay “yes I am”, but then I can see that she’s pretty frustrated Next set, she’s actually smashing the ball, and I say “ok, that’s great, now you’re kicking my ass”, and she suddenly stops and says “that’s great?! As in you are like a teacher and I am your pupil?! I am not having any of this!!!” And she immediately throws her bat, and walks away, while I am standing there, flabbergasted. I really have no idea what happened, but I guess I should have kept my mouth shut in the fist place. But am I the asshole mansplainer here?🤷‍♂️

Edit: I am the asshole, should have kept my mouth shut. My wife is also going through stuff ATM, which makes her short fused