Sometimes it seems like disappointment is one big ball of cells, like for every little disappointment there is, a cell is added into it. Disappointments like:
1) Patrick
2) Not being able to go to France
3) Not being able to go to Phuket
4) There being no Campbell's soup at home
5) Middlemarch being spoilt
6) 'Spoilt' not being in Firefox's dictionary
7) Only being able to understand 9/18 references

And then the ball grows and becomes larger and more grey (I don't know why but these disappointment cells look grey to me).

8) 'Grey' not being in Firefox's dictionary
9) Thinking I've spelled things wrongly only to find that it's American English being a bastard to it's far more elegant and original British English counterpart

Contrary to popular belief, happiness doesn't actually make the ball shrink. Oh no, the ball only grows, it never gets smaller. What happiness does it is hugs the ball, it doesn't mind it's weird jelly-ness. Happiness loves disappointment, it embraces it and in doing so it stops disappointment from growing bigger and slipping. But when happiness goes, disappointment is left alone again - ever ready to drop.

Then one day the ball will grow so big and huge that it tips over and starts to roll down a hill, and when it finally reaches the bottom of the hill you die.