Just bought a car. Can I take it back??

[hoff21]

I just bought a car late last night. I traded my other car in, which looks good and ran fine in and got raped. I'm still sore from the events last night and realized this morning that I can't afford or really want the one I bought. What do you guys suggest? Lie about how it runs? Tell the truth? Shuddup and learn a lesson? I'm sure I'm screwed but I wonder what others have done when this has happened to them.