Has anyone ever had a Caf-Pow b4, if so where did you get one, and what's in it?

No, it isn't real, but some people say it's Hawaiian Punch with 7-Up.
Hope that's helpful.

I just always thought it was made up, like Slurm.

I believe that it is, sadly, made up. I think that they made it up because they did not want to promote any companies such as Coke or Pepsi. You will see that when ever Gibbs brings in a coffee, it has a similar symbol as Starbucks, but it is not actually the same. I believe that Caf-Pow is pretty much the same.... What a bummer, I bet it would taste awesome!