Claim to be an anarchist and then spend the rest of the time telling other people what to do.
See also: How to be completely oblivious to irony
See also {{How to fail when attempting irony}} (not a Wikipedia entry). Irony depends on a contradiction (American Heritage Dictionary says "An expression or utterance marked by a deliberate contrast between apparent and intended meaning".
If I wrote "Claim to be a hunter and then spend the rest of the time shooting things", there'd be no contradiction/contrast and no irony here. I was attempting to point this out.