I used to get my hair cut buy these two dudes that owned a little barber shop and every once in a while some shady looking guy would come in and they'd stop mid haircut and go into the back for however long they were gone for. Eventually, the random dude would leave and I'd get my haircut finished. I was working as a cook so I'd show up on line a Tuesday at 11am. Place would be dead otherwise. I grew up around there and I'd been going for a long time so they weren't worried about me.
One thing that was crazy about this place is the only magazines were like guns and ammo type magazines. In Canada. Highly unusual. This was back when a barber shop was still likely to have a few "gentlemen's magazines" lying around. Not them, just guns. :)