- when you have early-morning dreams of dining out with your family (and the annoying dadi).
- when the cause of a headache in the morning is over-sleeping.
- when you are extremely tired after doing nothing but wasting time.
- when you call your mother the first thing in the morning and talk to her and you have this sickening happy feeling when she smothers you.
yeah, you then know you are desperately home-sick.