In my opinion one of the funniest things about the show is when Janet got mad and made pouty faces like a child. Like this one https://64.media.tumblr.com/53d2f4f702aaa1a922d2769cdf197166/tumblr_mo79i992uK1spklhto2_500.gifv

She sure got her point across didnt she?

Her face when the girl tells Jack "Like, oh my God, I didn't know you were living with your mother" is priceless.