Understatement is always the absolute best way to put forth earth shaking ideas. Tell me what you know. Puns are for children, not groan readers. Go around the barn at high noon to avoid colloquialisms. Even IF a mixed metaphor sings, it should be derailed.
Exaggeration is a billion times worse than understatement.
Proofread carefully to see if you any words out. The beguiling ideas about science quoted here were gleaned from essays, exams, and classroom discussions. Most were from 5th and 6th graders. One horsepower is the amount of energy it takes to drag a horse 500 feet in one second. If you don't hear it, you got hit, so never mind.