I get this request from time to time from my girl. I love it when it happens.
At first she would try to do whatever she could to avoid asking, eventually begrudgingly giving in, usually with a shortness in her tone. Now, it's almost automatic, and her request takes on the sound of a song that makes me feel big and protective.
But, just to throw her off, i will temporarily increase the length of her nails, which causes her to have to adjust to a whole new daily impediment.