You know that thing you just did? Don't do that!

You will need to know the difference between Friday and a fried egg.
It's quite a simple difference, but an important one.
Friday comes at the end of the week, whereas a fried egg comes out of a chicken.
Like most things, of course, it isn't quite that simple.
The fried egg isn't properly a fried egg until it's been put in a frying pan and fried.
This is something you wouldn't do to a Friday, of course, though you might do it on a Friday.
You can also fry eggs on a Thursday, if you like, or on a cooker.
It's all rather complicated, but it makes a kind of sense if you think about it for a while
' Douglas Adams