If you can smile when things go wrong
And say it doesn't matter,
If you can laugh off cares and woe
And troubles makes you fatter,
If you can keep a cheerful face
When all around are blue,
Then have your head examined, bud,
There's something wrong with you.
For one thing I've arrived at:
There are no ands and buts,
A guy that's grinning all the time
Must be completely nuts.
Quoted by Elder Holland (I couldn't find the actual author)