What is a line in Romeo and Juliet that seems to be insulting. And why is this line insulting?

Question

The line has to be between act 1 scene 1 and act 3 scene 1.

Answer 1

Act 1 scene 1
Montague-"Do you bite your thumb at me sir"
Capulet-"No sir I do not bite my thumb at you sir but I do bite my thumb sir"

biting your thumb at some one it the Elizibithan time is equal to flipping some one off now
Im not sure about act 3 scene 1

Answer 2

This is way too vague. You've basically asked us to find ONE "insulting" line (insulting to who?) in basically half of the play.

If this is a homework assignment, your teacher ought to be ashamed of him/herself.