who's on first

noun

A situation in which confusion arises due to homophones and similar misunderstandings.

Meanings

nounwho's on first (plural who's on firsts)

plural who's on firsts · alternative Who's on First · alternative who's-on-first

  1. A situation in which confusion arises due to homophones and similar misunderstandings.

    “Goddess, Mistress. I'm sorry, Mistress.” I felt a who's-on-first moment coming on.

    2010, Antonia Everett, Cruel Beauty: Confessions of a Dominatrix, John Mendelsohn, →ISBN
    5 more examples

    This pride of sponsorship, rather than pride of rating, seems to have been lost in the welter of decimal points and who's-on-firsts.

    1965, Saturday Review

    With that, you'll know she knows how you feel — which relieves you of the supposed-tos, the what-ifs, the what's-my-moves and the who's-on-firsts, and frees you just to see how it all turns out.

    2009 October 11, Caroline Hax, “Dad's views threaten family peace”, in Times Union

    But Rose interprets the remark as a statement that the girl is having a party herself, which leads to a “Who's on first?” comedy of errors.

    2013, Martha P. Nochimson, David Lynch Swerves: Uncertainty from Lost Highway to Inland Empire, University of Texas Press, →ISBN

    This 'who's on first' conversation continued, both of us getting more and more frustrated than the other, until it hit me.

    2013, Simon Pont, Digital State: How the Internet is Changing Everything, Kogan Page Publishers, →ISBN, page 64

    (The Japanese car model is a Sosumi, as we learn in a Who's on First? comic exchange; Gribble recently dealt with a case involving an Isuyu.)

    2015, Steven Moore, William Gaddis: Expanded Edition, Bloomsbury Publishing USA, →ISBN, page 150

Origin

From "Who's on First?", a comic routine from 1930s vaudeville made famous by Abbott and Costello, in which two people discussing a baseball team become confused by names such as "Who" and "What".

Full word history & related roots →
Cite this entry
APA

who's on first. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/who's%20on%20first

MLA

“who's on first.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/who's%20on%20first. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “who's on first,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/who's%20on%20first.

Source: who's on first on Wiktionary, CC BY-SA 4.0.