Dabadee

Though the exact meaning of dabadee cannot be expressed in mere human words, the meaning lies somewhere between "oh well" and "it's all good". Typically used when things are FUBAR, dabadee is a way to shake it off and carry on.

professor: "You only attended 2 classes the whole semester. I'm afraid I'm going to have to fail you."
you: "Dabadee" *shrugs shoulders *walks out