How? I think I need a diagram…maybe even a video to understand this very concept. I’m trying to imagine walking in such a way that I could collide with someone, making contact at the lips, while absentmindedly sucking in for some reason. Maybe, just MAYBE, if I set my soda down on a table in a food court at the mall, then got distracted, and saw a cup on a table thinking it was mine and I puckered my lips and brought my mouth towards the straw, but it just so happened that it wasn’t my soda, it was someone else’s soda, and they too were puckered up going for the soda and right as both of our faces were approaching the soda, something big fell and the vibrations caused the soda to fall off the table and we both tripped due to the vibrations, maybe then we might inadvertently lock lips? I don’t know, I spent a couple decades trying to figure out how to get someone to kiss me on purpose…didn’t even know ‘accidentally’ was an option.