Making a face when drinking wine?

Im fairly new to wine, I tried it when I was in my early 20s and hated it. But now that I'm 32 I decided to try it and I'm somewhat enjoying pinot noire, still trying different wines to see what I like. However I've only drank wine in my home and not out. Whenever I drink I do make a face like if I just ate something sour, I can't keep a straight face. Does anyone else do this? I don't want to go out to a restaurant and start making a weird face drinking wine.