Simple past tense and past participle of lampoon.(verb)
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Use "lampooned" in a sentence
"His replacement at the Call lampooned Twain in the newspaper—so much for professional courtesy—as a melancholy-looking Arab, known as Marque Twein."
"Here is a look at two toy mailboxes my daughter has been playing with even though neither is intended for her age and I kind of lampooned the whole idea of buying a toy mailbox in an earlier post. *cough* Was that me?"
"And they were always lampooned regularly in the press as idiots, as garbage."