Personally, I like to think that I look like this when I'm knitting:
Do you know what your knitting face is? Find out here at Love Knitting - So worth the giggles :D :
In the interest of full disclosure; I am often a tongue-out knitter and sometimes its variation: "the lipless smile". Thank god I live alone as that face bears an unfortunate resemblance to my kiddos' "poop face"!