Let us set the scene... It is a quiet day in Verona's main marketplace, when all of a sudden various young men wearing conspicuously different-colored clothing arrive...
It's a pity that Sampson and Gregory's banter is often heavily cut down in performance, as it's one of the more sustained examples of that classical Shakespearean technique I like to call "dick jokes".
It's then immediately followed by a mass brawl precipitated by one guy biting his thumb (an offensive gesture) at another guy.
And people say Shakespeare is boring...
Romeo and Juliet
Dramatis Personae | Prologue | 1.1a