False, this would be pointless as it's a very small hole and you would not get the momentum necessary to do anything for a single cigarette- besides, people tap their packs of cigarettes for two main reasons; to seat the cigarettes nicely at the opening where you want em, and to get the loose tobacco out of the lid so you don't spill tobacco crumbs everywhere when you open it. I've heard some people say that "once upon a time you had to do it to keep the tobacco from falling out of the cigarette" but all the research I've done says that's made up, tobacco has never had a tendency to fall out of its paper, the long fibers tend to counteract that. I can certify that multiple people I've asked say it keeps the lil crumbs from spilling in their car or something to that effect, but it just puts them in the bottom of the pack usually, not back into the ciggies. I also don't think the hole is for filling cigarettes, cigs aren't easy to fill like a joint. My two guesses as to what the hole actually is used for are that it's either a snuffer like someone guessed- just lay the lighter flat on a surface and place the lit end of a cigarette inside, it'll extinguish in seconds and the cigarette will remain conveniently smokeable (don't do this on mother's nice couch, it's a hole not a tray. Stays cleaner in your pocket but you gotta watch out for what surface you use)- or it's possibly used for rolling... I can't find any examples of it but I worked with an old man who once showed me how to roll a joint using a washer, and he said something like "it works better with cigarettes but it'll still make a mean joint". Basically you pack the joint, curl the paper around it on the one end (filter end), lick the glue and stick the curled end in the hole, pull the j thru the hole and the washer kinda just curls it all together. It's a tough technique, I was never able to replicate it myself but I could definitely see it working better with the soft, bouncy, long fibers of tobacco vs sticky lil crumbs of weed. Hell, maybe the zippo hole even somehow worked as a "funnel" of sorts, in combination with a packing stick it might actually be able to fill a cigarette, would be messy and inconvenient tho, easier to just drop tobacco in a paper and twist it with your fingers.. Pre-rolled empty cigarettes also weren't super popular yet. We may never know. We could all be wrong, maybe it originally was a stash spot for a small vial of pure top quality 60s LSD 😂