Those are the weirdos, the irriverent, the different, the unusual figures that have shown up on a Carnival day in Venice, very likely in the St Mark's Square.
And we're talking about the unusual masks, or the uncommon situations that repeated themselves during Carnival time, and maybe not.
"Ah! c' Cadet là.
Quel pif qu'il à:
Ah! c' Cadet là quel pif."
"Ah! that Guy down there.
What a nose he has:
Ah! that Guy down there,
what a nose."
This image is referring to the Carnival in Paris, but it perfectly shows the idea.