What does i need your John Hancock mean?

Answer 1

"John Hancock" is presumably the problematic term in that phrase, the rest of it is pretty straightforward.

"John Hancock" is slang for "signature", coming from the very prominent signature of John Hancock on the US Declaration of Independence.

The John Hancock Life Insurance company had a commercial jingle featuring the line "put your John Hancock on the John Hancock".

Answer 2

A person's "John Hancock" is his or her signature. It is an idiom taken from the fact that John Hancock had such a prominent signature on the Declaration of Independence.

Answer 3

I means "Can I have your Signature" Because John Hancock had the biggest signuture on the Declaration of Independence.

Answer 4

Give me your signature.