In my old hood there was a big butcher shop (great place to get decent meat for really really cheap). They set up a little lunch counter/grill where they'd cook you up sausages, burgers, chicken breast sammies and the like... again dirt cheap. Problem was they tended to keep it staffed with the second gen teenagers of the local European community (kids of the owners, older staff and friends kids etc who were hard working immigrants or whose immigrant parents didn't let them grow up to be slackers).
 
Anyway... one day I was in there getting some lunch and there was this braindead young girl blabbering on to her friends behind the counter. She puts my burger or whatever it was on the grill with her tongs, turns around and starts messing around with the stack of chicken breasts that are marinating in the cooler tray thingie. She then uses the SAME TONGS (which are now covered in raw chicken juice) to put my bun onto the grill for toasting (I could see the chicken juice dripping on to the bun). She also uses them to flip a bunch of other orders.
 
I politely point out to her that she just got raw chicken juice all over my bun and I'd like a new one that is less... salmonella-y. She had absolutely NO clue what the problem was and tried to argue there was nothing wrong with. I of course insisted. She does the old teenage eyeroll and slags me to one of her little friends who ALSO doesn't see the problem.
 
At that point one of the older women behind the counter who knows me hears what's going gives the little snot a bit of a talking down and tosses a fresh bun on the grill with clean tongs. Of course now the two little twinks are huffing and rolling their eyes so hard at me I thought they'd pass out from dizziness.
 
Brats.
 
 

Beepster
In my old hood there was a big butcher shop (great place to get decent meat for really really cheap). They set up a little lunch counter/grill where they'd cook you up sausages, burgers, chicken breast sammies and the like... again dirt cheap. Problem was they tended to keep it staffed with the second gen teenagers of the local European community (kids of the owners, older staff and friends kids etc who were hard working immigrants or whose immigrant parents didn't let them grow up to be slackers).
 
Anyway... one day I was in there getting some lunch and there was this braindead young girl blabbering on to her friends behind the counter. She puts my burger or whatever it was on the grill with her tongs, turns around and starts messing around with the stack of chicken breasts that are marinating in the cooler tray thingie. She then uses the SAME TONGS (which are now covered in raw chicken juice) to put my bun onto the grill for toasting (I could see the chicken juice dripping on to the bun). She also uses them to flip a bunch of other orders.
 
I politely point out to her that she just got raw chicken juice all over my bun and I'd like a new one that is less... salmonella-y. She had absolutely NO clue what the problem was and tried to argue there was nothing wrong with. I of course insisted. She does the old teenage eyeroll and slags me to one of her little friends who ALSO doesn't see the problem.
 
At that point one of the older women behind the counter who knows me hears what's going gives the little snot a bit of a talking down and tosses a fresh bun on the grill with clean tongs. Of course now the two little twinks are huffing and rolling their eyes so hard at me I thought they'd pass out from dizziness.
 
Brats.

I've always had a big problem with addressing problems with Millennials I've hired. They seem to have a very different idea of what's acceptable and what's not acceptable, along with an extremely thin skin when it comes to taking criticism (hence the "snowflake" generation). I once had an employee take the day off without asking me. I didn't even hear about it until I invoiced the clients he was supposed to be servicing that week, and they all got back to me and said "this bill is wrong, we didn't get anything on Thursday." When I looked into it it turned out that Thursday had been this employee's birthday, and he had earlier in the week left notes for all of the clients asking them if they minded if he had the day off. They took pity on him and said yes. He didn't think for one second that maybe he should ask the guy who signs his paychecks, and was truly stunned when I said I had a problem with it. 10/10 for audacity, I gave him that 
 
With other employees I've gotten unbelievable reactions when addressing things like consistent lateness. I never so much as raise my voice at them or threaten them or say anything at all nasty to them - I just adopt a "serious" businesslike tone when saying things like "Listen, we need to talk about your punctuality. You've been an hour late every day for the last two weeks and it's really not acceptable. Moving forward can we try to get in on time every morning? It's just part of the job." In response to that I get "Why are you yelling at me! Don't yell! You're not respecting me enough! I feel like you're hassling/oppressing/victimizing me! I'm not a kid!" 
 
That last one, "I'm not a kid," is so ironic.