L7 (meaning boring, dull) could come from one of two sources,

  1. In the (say) 1950s folks would make hand-symbols in the air. (There's a retro example of this in the movie Pulp Fiction for example.) If you do an L and a 7 it's a "square" symbol. Could be L7 came from those "50s style" hand symbols.

  2. On a (I suppose) computer, or just in paper typesetting, "L7" looks like a square. Could be L7 came from typesetting / letter shapes.

Regarding 2, one would think it would be more like only in the computer/SMS era (perhaps from, say, 1990 onwards at the earliest) - however it may have been based on plain writing or typesetting. Regarding 1, I really don't know when "hand symbol squares and similar" was first a thing ("the 50s" was a wild guess; could be much earlier or later).

Regarding L7, the earliest reference I know of is


in the song Wooly Bully.

Does anyone have any firm actual references on whether "1" or "2" is the origin?

or indeed an earlier reference?

Please note that there are any number of online mentions of BOTH explanations. For example on the "wikipedia" page, some person has typed that L7 is a hand shape. This is completely unsourced and, just someone typing. (Actually FWIW I'll remove it from wikipedia just now, since it's totally unsourced.)

You can find any number of mentions on the net of folks who think one or the other.

Does anyone have any sourced firm early explanations or references; or perhaps an earlier usage than 1964?

Note that for example Green's dictionary says it is the (written, typed) letters L7 (but indeed they mention it can be "accompanied by" the hand shape). So unfortunately, absolutely no information there about origins or dates, only a description.

  • According to Wikipedia, the slang term "square" for boring/dull/conventional originated in the 1940s. So the hand/typographical symbol has to date from after then. Commented Nov 7, 2020 at 14:12
  • @Peter I cant't find a definitive etymology for 'square' = unhip; it just could be that L7 came first. Commented Nov 7, 2020 at 14:20
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    @EdwinAshworth: Square apparently originated among jazz musicians. My guess: square referred to the unhip beat of unsyncopated 4/4 music. From Google books, 1946 (snippet view): They danced to the big square beat of dance-hall bands , and made sticky their fingers with syrupy popcorn , candy spun like foam , orange juice dyed vermilion. Commented Nov 7, 2020 at 14:26
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    @Fattie How is this different from your earlier question? FYI, the online Green does have origins and dates, as quoted in answers to your other question. You need to click on "Show all" next to the Quotations heading.
    – Andrew Leach
    Commented Nov 7, 2020 at 15:05
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    ... and I would guess it comes from a hand signal, not typography. Two guys look at a third person, one makes the L7 gesture, and the other nods. Commented Nov 7, 2020 at 18:30


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