When you return from a long vacation to discover one of 2 things.
1) That you are very sad returning to work and the usual grind, after spending 2 weeks in a different country having tons of fun.
2) To check your email, and find 2 emails after 2 weeks of being gone, and feeling sad that nobody emailed you.
1) After Bob came back from China at 3 AM, he was immediately swamped with 3 days of straight work from the time he was away.
2) "Damn! I just got back, and the only email I got was spam...I feel so loved..."