You’ve had a client that thought they knew more about design than you.
Your clients pay you for your professional expertise and skill, yet you’ve run into one of ‘those’ clients, that refuses to take the advice from the very person he/she is paying for advice (you).
You’ve had a client that insisted on using the font “Papyrus,” and you had to hold in your barf as you prepped it [the design] for printing.
You’ve requested a vector logo from a client, and instead, they email you a 72 dpi image they grabbed from a website.
You’ve used typography as a texture.