What was your first BNBR violation?

First and so far only eponymous BNBR. Story told in three parts:

• What happened next? by Nick Nicholas on The Insurgency
• My first BNBR warning by Nick Nicholas on The Insurgency
• Cartoons from my first BNBR by Nick Nicholas on Gallery of Awesomery

(My only anonymous BNBR, I *think*, was for a similar reason.)