The world is full of crazy people. Apart from those clients who try to lower your prices, there are the ones who know it all better, then there are those who ask confusing questions (eg, when needing their hair extensions, done by someone else, refitted and I quote them my price, they'll ask, 'do you provide the hair?', so I need to make sure to explain that this is the price for refitting, and if any hair is needed, the price will be higher. It always ends with them huffing and puffing), the ones who ask inappropriate personal questions ('Did you move here with your family?'-'No.'-'Where is your family?'-'Not here.'-'Do you see your family often?'-'Yes, in my nightmares.'-'So where IS your family?'-'Deceased.'), and the ones who are never happy with anything you do.
I did a girl's color the other day using one of the Wella Illumina techniques and she didn't like the fact the color wasn't 'even', because she likes it all to be 'one color', although she didn't say that was what she wanted in the beginning. She also suffered from hair loss, but still had about twice as much hair as myself (and I don't have thin hair), yet kept referring to her hair as 'omg it's sooooo thin'. Well that's not my fault now, is it?
On a personal level, I hate it when people make you guess their age. I usually say what I think or even add a year or two when I'm particularly annoyed. A 24 year old was 'surprised' I didn't think she was seventeen, and that after telling me she'd been working in a bank for 4 years after her uni degree. Honestly!
The worst client I've ever had though was an older lady with hair extensions and extremely damaged bleached hair who's been banned from several salons due to her erratic behavior. She forever sought to get a discount, was never happy, it would take me 4 hours to do what I normally do in 1.5 hours, and she had the cheek to ask me for 'something to remove my extensions' on Christmas eve. Needless to say, her number has been blocked.