A shot glass works great for this if you have one. Or one of them small glass's they use for tea candles will also work.

But I go one question on this and I know its a bit off the subject but. If your woman like for you to lick and suck her pussy off then you going to get her cum and passion in your mouth. What I am say is has she ever give that any though. because most of us guys that do don't complain that she tastes bad.