Newton's son...

Was rapping too loudly. I couldn't tolerate it, so I terminated him.

High school test scores

Are now retrogrades

Everyone has problems...

Why are we picking on Lambert?

The length of time it takes gum to lose its flavor

Is called the orbit period.

Theta

Here we see a theta in its natural habitat. Somehow it manages to be both a common orbital element and a true anomaly.

If you are charged based on time in orbit...

Do you pay a TOF-FEE?

What do you call the angel on your shoulder?

The angel of inclination.