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I know you are but what am I

(humorous, rare) Used to direct back a statement as a compliment.

Documented since 1950s1950sBoomerhistoricalCurrent86 viewsLast reviewed Jun 29, 2026+ Add a definition
🌐 Internet & Memes
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Born ~1957 · 1 year of recorded use
1957Born2026: 2 citationsToday, 2026

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#1·Apr 26, 2026

(humorous, rare) Used to direct back a statement as a compliment.

So when Mr. Macchia states that people who collect state quarters are fools, my son says I should reply, "I know you are, but what am I?"
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#2·Apr 26, 2026

(chiefly, Internet slang, rhetorical question) Used to mock a retort in a dispute that tries to reverse an insult on its original speaker.

At this point Johnny changes tactics and hollers, "I know you are, but what am I?" and the voice echoes, "I know you are, but what am I?"
Origin: , but dates back at least to the June 15th, 1957 issue of The New Yorker (Vol. 33 No. 17, page 23). In "The Talk of the Town", which was a collaborative effort by the magazine's staff writers: "INTERROGATIVE WISP FOUND IN GUTTER OF MACDOUGAL STREET: 'I know you are but what am I?'" The phrase is often attributed to Pee-Wee Herman. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
Heard in the wild
  • “Uhhh I know you are but what am I, Marco? —-Iranian government, probably”

    — Bluesky· May 2026
  • “It’s the famed “I know you are but what am I?” strategy of legal argument.”

    — Bluesky· May 2026
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Viral internet speak — memes, ratios, main-character moments, and the algospeak of every platform from Twitter to Reddit to TikTok comment sections.

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