Usher coined the phrase in his song "That's What Its Made For." When you don't have a condom on and you are having sex with the intention of pulling out and busting your nut elsewhere, however, you get so caught up and or overwhelmed with pleasure that you completely forget and cum inside the vaj.
I can't help it man... I just got lost in the sauce...
by thekismetkid June 16, 2010
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."
by Jay Denson August 17, 2006