Buffer Urinal Edit Meaning

1.

The requisite one urinal minimum you put between you and any other men who may be pissing at a row of urinals. It's a courtesy thing, and it's about proximity more than line of sight: shame shields don't obviate the need for a buffer urinal.

Of course, when you're in a situation where the buffer is impossible because there are more men than there are urinals (sporting events, concerts, etc.), the buffer urinal no longer applies.

I took my place in the row, making sure to leave a buffer urinal between me and the blonde.

See The Grammar Nazi