Sickness is the mother of modesty, as it puts us in mind of our mortality, and while we drive on heedlessly in the full career of worldly pomp and jollity, kindly pulls us by the ear, and brings us to a sense of our duty.
Definition.com
Meme.com

Definition.com
Sickness is greatest danger for the healthy. It is not from the strongest that harm comes to the strong, but from the weakest.
Meme.com

One-Liner.com
My cat just got sick on the carpet. I don’t think she’s feline well
Dad Joke.com
What do you do with a sick boat?Take it to the doc
Definition.com
Sickness is a predicament about which the worst thing is having a disease you can't afford.
Dad Joke.com
Why don’t ants ever get sick?They have antibodies
Dad Joke.com
How do you tell if a vampire is sick?See if he is coffin