Girls...do you ever do this for your man?

He wants me to masturbate in front of him one of these times. I never thought of doing this in front of him before, and I told him in the past " well honey, that's what your hands are for" He brought it up again, and I am thinking about doing it. During sex, I sometimes touch myself or feel myself up in the moment, and I know that drives him wild....but just to lay there and get my rocks off while he sits back and watches? So, any of you girls ever done this? Did you feel silly doing it? Guys? Really, what is the big deal? I walked in on one of my exes jerking off...and it was not a pretty site, lol! I wondered how the thing was still attached with that way he was yanking on it!!!