After about 50 minutes of a tough workout session one client looked at her watch, looked at me and said "I've gotten my money’s worth. You can go now."
A client was about 15 minutes late for her session. I asked her how long she could stay since I did not have a client right after her. She said she could only stay 45 minutes and that "I don’t really want to sweat as I have dinner plans right after this."
I arrived at my first client of the day to find her sitting on the living room sofa with a cup of coffee. She proceeded to try to convince me that we should just drink coffee and chat instead of exercising.
A client once offered me double my session fee if I would let him skip working his abdominals that day.