What does it mean to be fluttering in the street in the vernacular?

Inexplicable in the street has been an extension, from verb-object phrases to adjectives or verbs.

Exodus 1: So-and-so is really a street fighter. It means so-and-so son of a bitch never does good deeds.

Exodus 2: So-and-so acts in the street. His behavior is very bad and annoying.

"Kill me and throw myself into the street."

I guess it's "kill me and jump into the street." It means, "Come and kill me, asshole."

The original meaning of "jumping on the street" in Cantonese means falling into the street, that is, falling to death in the street. Now the meaning has evolved into the meaning of illegitimate child. "Eunuch" is of course a man without a penis, or a man who is neither male nor female.

"Jumping off the street" is equivalent to "asshole".