No, no not that silly loveable man who designs flyers (hint hint) but the art of being homesick (is it an art? It makes you feel semi-existential so it could be)

I used to get homesick when I was in the cub scouts and we used to go away on 'sporty' weekends, so much so that I'd 'take to my bed' like I had the type of brain fever that only women in 19th century novels suffer from. Recently I have started to feel that again bizarely as I'm working 'out of my zone' and have a really maudlin itchy behind the eyes type feeling that only a lost child walking aimelessly throough a crowd of giant grown ups can feel. And I'm only working 7 miles from home for crying out loud.

When I went to University though I didn't get this feeling at all, but what IS being 'homesick'?

Is this a one off LwP?