When you begin to have intercourse with every intention of using a condom, however you start off without one. At some point you say to yourself *im going to get the condom*, but you never do. In her moisture, the sensation is so good, you never bother to get up and get one, therefore remaining raw. Short term; going raw, no protection.
"Man this girl was so fine that we started off with the foreplay and before you know it, I was Lost In The Sauce."