Did I say it?

GRE type question:

Office_girl1 is singing "Give it to me baby, aha aha"...
Office_girl2 frowns, and looks at her in disbelief.
Office_girl1 finishes the song and looks at Office_girl2.
Office_girl2 says: "You definitely need two manicures: one for your hands and one for your head".
Office_girl1 is caught off guard and responds: "Are you saying I'm dumb?"
Office_girl2 asks: "Did I say it?"

For 20 points: What did she mean?