Valentine Betti
Valentine Betti voted up Ray Dart's answer

Tell her that Zargs from the Planet Susan have landed and they have disrupted all telecommunications. That will work. Sure of it.

Valentine Betti
Valentine Betti voted up Tinkerbell St. Basil's answer

Mess up your hair, splash some water on your face (to look clammy) and tell her you have the flu. Keep the phone close to your face so that nothing else in the background is showing, except a pillow.😥