"And I won't pull his ears"

The girls and I have lots of fun during their bath time.  We sing songs, talk about animals and what noises they may, talk about manners and the importance of being a good friend, etc.  Last night we were talking about being a "good big sister" especially to the new baby that is on the way.  I asked Addie how she could be a good big sister and these are the things that she said:
"I will give baby brother (she is convinced she is getting a baby brother but if you ask her if a brother is a boy or a girl, she always says girl! LOL) nice touches, and hugs, and kisses. No hitting baby brother. I will feed him. I won't kick him and I won't pull his ears"

Won't pull his ears?

Never in the 2 1/2 years of her life has she ever pulled any one's ears.  In fact, I don't think anyone has ever even pulled her ears! So where did that come from? Kicking, yes.  We have dealt with kicking.  And biting for that matter.  But pulling ears? I don't have any idea where that came from!

She is one very silly almost 3 year old.