For posts about the comic Peanuts, by Charles M. Schulz
Transcript:
Lucy and Charlie Brown stand lapping up their ice-cream cones.
Patty approaches and Charlie Brown explains, "We're having an ice-cream cone eating race..."
Patty asks, "Who's ahead?"
He replies, "Lucy...by two laps!"
Original comic:
Are they saying "lap" after each lick? Or had non-speech-bubble text not been invented in 1952?
Kind of a weird artistic choice, I think. While looking into this, found a site dedicated to comic book sound effects:
https://www.comicbookfx.com/result.php?tags=lap&display=50&order=dateolderorder&page=1&x=6&y=10
Unfortunately, it doesn't list "Lap!", but looking at the date ranges, you can see that the convention without speech bubbles was clearly around by then.