When somthing is Dysfunctional, or not working properly. If something/someone is not "normal."
If something or someone is odd in behavior, action, or just existance
Out of the ordinary
1)Gosh, why is this computer not working...its being so FOO.
2)That clock is so Foo, its tilted 25 degrees off center.
3)Why are there 4 coffe cups full of water in that microwave? Foo much..