Your girlfriend has been getting really turned on by these images of cocks, not yours silly! YOU SUCKING COCKS! Now that's what she wants. And for your pretty girlfriend, you know that whatever she wants, she gets. So she's going to guide you through it, after all she adores these big, thick, cocks - she knows what she wants and you are going to make them nice and hard for her to appreciate. So go on, get on those knees, open that mouth of yours and let that big cock slide in...