I have to expunge it every time I write it, at least. Will allow it when copy-editing other people's work especially when they are a bit rubbish anyway but I just can't use the phrase any more after the whole 50 Shades thing when she bit her lips every five minutes to the point where she must have had a face like a butcher's dustbin.
And this annoys me, a little, because people do bite their lips when they are thinking hard, or confused, or put out.