The term "Here's mud in your eye" is a drinking toast. Outside of old black and white movies, I don't think one encounters it very often these days. I actually had some mud in my eye this morning. A car went by and splashed a puddle on me and I got some crud in my eye. I was not amused.
The dilemma is what to do about it. I know where the car that splashed me lives. The question is, how much retaliation is justified for getting splashed with muddy crap? I decided, against my nature, to be merciful and not slice their tires or put cement in their muffler. I don't really know why I was so forgiving.