A stage 3 is when you don't know what the hell you are doing with a girl and just randomly make up stages to get some action. This type of action is best performed by Chads, also known as a pussy or bitch. It basically is kissing, but stages are needed with the one we call Chad. Chad got to a stage 3 just recently. Good job Chadwick.
LAUREN: Hey, so are you ready to take this to the next stage?
CHAD: Yeah, I'm so ready for a STAGE 3!!!! Lets do it!!! Yes!
LAUREN: Ok, here comes STAGE 3!