Yep. I routinely would get "watch yourself" or "hot out tonight, careful driving back" or even the occasional "be careful with these, shit's fire". Depending on which of my people it was, the last line was either just BS to push his/her product or a real warning.
I had one kid who would never say anything in that regard unless I got a bunch. Then he'd be like, "You know how much diesel you got there?" "You need to watch your shit."
Oh, thank you so much. I'm a complete fucking idiot and don't realize that 14 B's would put me in a pen for a bit. I'm gonna drive 80mph on the way back.
Again, depending on the person, they'd either seem to say it just because that was something they said, or they were trying to protect a daily source of income. Or, more rarely, I would have someone that actually seemed to care. For their own benefit as well as mine.