Help me to always give 100% at work...

12% on Monday,
23% on Tuesday,
40% on Wednesday,
20% on Thursday,
5% on Fridays.

And help me to remember.....
When I'm having a really bad day,
And it seems that people are really trying to tick me off,
That it takes 42 muscles to frown
And only 4 to extend my middle finger and tell them to bite me.