The act of one bro spitting on another bros cock whilst he is mid-flow at the urinal
"Went to take a piss cos I was 6 pints in when Lil Johnny comes up and stands at the next urinal, with all the love and emotion of an airport reunion. I'm going full flow when he looks down and spits right on the shaft of my flacid water pipe, looks up with teary eyes and says "what a beautiful moment between bros!"
A sad or introspective moment in life is reminiscent of a specific video of a mouse from "Creature Comforts" eating candies alone, where you've been forced to eat a meal alone for any number of reasons.
I had a mouse moment today when I was forced to eat my Subway Sandwich alone in the park.