Yeah, most likely someone who doesn’t want their partner/housemate/employer/etc. to know they’ve been drinking.
Alcoholic fucking bastards.
I’ve seen stories about Galaxy Gas, large N2O canisters that are indeed legal in some states.
Prolonged use of nitrous oxide can lead to vitamin B12 deficiency per this story, and that’s where a lot of the neurological damage comes from. I hadn’t previously known that.
At my last pharmacy job before I decided to retire, in 2012, there was a fentanyl shortage (!) and we had discussions about what to put in the epidural bags if we really truly could not obtain it. One of my technicians joked, “Oh, just give them some nitrous oxide!” and I told her that some places have long done that. But that’s hardly recreational use.
Hippies??? For real?
Were you one of the attendees at that law enforcement conference in Fear and Loathing in Las Vegas? Were they hepped up on goof balls maybe?
That you Chief Wiggam?
Just got back from a trip. When I got in the limo heading to the airport, there on the floor was a floss pick! 
I once found a dildo in the parking lot at an old job I worked at. however I don’t know if it was cinnamon flavored the way fireball is. I didn’t check.
I found a used condom in the parking lot of my apartment building a while back. Barforama.
ETA: I post-dived on myself and discovered I already posted that here. Oh, well.
Those I find at least once every couple of weeks when I walk my dog. Still looking for those dental picks.
As a geocacher, I find the fireball mini-bottles everywhere. It’s disgusting. So much so, that I jokingly chided another 'cacher about being an alcoholic after finding so many bottles near their various caches.
I found 3 of the the mini-flossers in our parking lot today. There is usually one or two as I stroll through the lot.
Gross.
But not on the S side of Chicago - the region of poor dental hygiene! 
I really need to look harder. When did these things become popular? I hadn’t even heard of them until maybe five years ago. Of course, I also suck at flossing my teeth. I did notice my wife buy some for the first time just about a week or two ago.
I didn’t read the whole thread, but is there another use for them, like with the old McDonald’s plastic coffee spoons? (Though I can’t imagine what.) Why are people finding so many strewn about?
I don’t see these around my parts either, or the fireball bottles. I don’t live in a hugely populated area so maybe it’s associated with population size? I do know that if I go on a run on a semi-remote deadend road, I’ll find used condoms laying around.
I see I posted on this back in 2020 complaining about covid gloves and masks. What I really see the most is redneck flowers blooming along the county and NF roads: Busch Lite and Keystone Light cans. EVERYWHERE!
In Toronto, I keep finding some sort of empty tube marked “THC” with a picture of a marijuana leaf. Maybe some kind of container for a vape cartridge?
One possibility is that it may simply have to do with where we tend to direct our eyes when going about our business. I don’t THINK of myself as someone who keeps my head down, staring at the ground. But perhaps I do just tend to look down more than you. Just a thought.
And, it might be the kinda thing that, once you’ve seen one, you are more attuned to them and see more. I sure never seek them out. A standard siting will be if I’m biking and crossing a busy road in the crosswalk. When I get to the next corner and am waiting for the light, I’ll see one in the gutter. Parking lots also seem to be common locations.
I’ve also noted that they do not disappear quickly. So, if I see one on a route I travel somewhat regularly, I’ll be seeing the same one multiple times, rather than multiple ones.
(Damn, I’m gonna be weirdly pleased the first time you check in and tell us you finally saw one!)
But who the hell is just going about their day flossing their teeth in public or in their cars? I’ve only ever flossed, the little I have, in front of my bathroom sink. It’s never even occured to me to floss elsewhere. Are people that good about their dental hygiene? (Or am I really that bad? I admit, on flossing, I probably am, but it also seems a significant portion of the population just doesn’t floss often at all.)
Ah, yes, the Baader-Meinhof effect. I am waiting for that to kick in. I’ve experienced the effect many times, and it’s always a little disconcerting, like some parallel universe has slipped into my own. I’m sure when I finally spot the first one, I’ll not stop spotting them!
Yeah - I think we’ve mentioned it above. Absolutely disgusts me. My best guess is someone goes out to eat - maybe lunch before returning to work, or grabs a bite before meeting someone, and is worried that they might have something in their teeth. Also, my understanding is that some folk’s teeth tend to trap food more than others’.
But it is absolutely inexcusable that these fuckers think their used flosspick is too disgusting to keep in their cars, so they toss it out the window for EVERYONE ELSE’S enjoyment. (On my not terribly short list of minor offenses that merit summary execution!) 
So have these things kind of replaced the toothpick for that on-the-go dislodging of dental debris? I’m just surprised people seem to have these things handy. With a toothpick, you can often find those at the eating establishment (I think some places still offer them, but I haven’t taken note lately). Not so much for dental picks. I feel like I’ve been let in on some big secret everybody but me knows.
Up until this point, your life has been but a hollow mockery.
(Never used one myself. Don’t understand the appeal/expense. And - like you, even when flossing at home I feel weird if I happen to leave the bathroom - perhaps to let the dog in.)
Found on my lawn this morning, plastic bottle for something called 99 Bananas. UGH!
Yep, I see those occasionally around here, too. Never had those. I have had Fireballs, though. Disgusting, yet somehow cheap and easy to get down. Was oddly my drink of choice when I fell off the wagon (back on it again, though!) Off to walk my dog … let’s take note of what treasures await! I get to walk by both railroad tracks and under the Orange Line, so fertile grounds for fortuitous finds!