How would say an action that's unintentional and brief like a native ?

I'm trying to express that a particular action I took was very brief and unintentional like when you suddenly sneeze, stretch, drink or scroll a social media. These sentences with different adjectives highlighted in **bold**. Which one sounds most natural to natives? Additionally, if none of these feel right, suggestions for rephrasing would be greatly appreciated. Here are the sentences: 1. Please don't be mad at me, that was only **a passing action**, like when you're scratching your back without even realizing it. You likely won't recall it. 2. Please don't be mad at me, that was only **a transient action**, like when you're scratching your back without even realizing it. You likely won't recall it. 3. Please don't be mad at me, that was only **a fleeting action**, like when you're scratching your back without even realizing it. You likely won't recall it. 4. Please don't be mad at me, that was only **a split-second action**, like when you're scratching your back without even realizing it. You likely won't recall it. 5. Alternatively, should I rephrase the sentence entirely? Does the overall sentence structure sound natural to you?