That sounds so familiar. Something like that happened to me when I underestimated how strong my partner actually was. What was meant to be lighthearted roughhousing quickly turned into me actually trying to tap out, haha. It reminded me of a scene I saw here:
https://ball-busting.cc/21077-frankie-babe-sunday-sermon-enjoy/ — the balance between playful and intense is tricky but can be really enjoyable if both are into it. Honestly, the best memories come from moments where you just let go and laugh through the unpredictability.