Visit the Academy of American Poets or Wikipedia for overviews on the epigram. Then take a shot at it yourself.
Here are a few examples for inspiration:
I am His Highness' dog at Kew;
Pray tell me, sir, whose dog are you?
— Alexander Pope
— Ogden Nash
- Here lies my wife: here let her lie!
- Now she's at rest - and so am I.
- — John Dryden
I am unable, yonder beggar cries,
To stand, or move; if he say true, he lies.
— John Donne