Where your girlfriend tells you she's going when she's really going to another guys house to fuck
Girlfriend: "Hey Josh I'll be babysitting for this lady Friday and Saturday night, all night too."
Josh: "Can i come and see you"
Girlfriend: "No. Absolutely not. The lady doesn't want anyone else over, not even to come out front and say hi."
noun. A person who your girlfriend seemingly needs to work on a project with. What really happens is, they go over to their house and fuck. Although some projects may be legit, the majority are made up. Closely related to a fuck buddy, but for a "supposed" educational purpose. This is your lover's excuse to cheat on you.
Girlfriend: "Hey Josh, I cant hang out with you at all on Saturday because i have to go to this guy's house to work on a project."
Josh: "For what class? Can I help?"
Girlfriend: "For(hesitates)...English. You wont understand it, and he(project buddy) is really smart. But dont worry Josh, he's just a really good friend!"
Josh: "Have fun with your project buddy"
This is bullshit. She's going over there to fuck. Dont be fooled.