218: Brown Immortality

Explanation
The top part of the strip was originally its own strip; this part is otherwise unedited. The caption wasn't there, of course. The bottom part originally had Lucy tempt fate by telling him she's glad Charlie's not the kind of manager to pull a player's baseball cap down over their head when they do something stupid. Here, she reminds him of the conversation he had with Linus 13 years ago. She essentially points out that they're still children, to the same result as in the original.

The title is inspired by Yellow Immortality, a My Little Pony: Friendship is Magic fanfiction by Estee in which Fluttershy finds herself in a world in which she can't die, and it horrifies her. The color name was changed to that of another color, which also happens to be the surname of the most iconic human in Peanuts.

The author writes:
The hazards of nailing down a year while implying that your characters grow up like normal when you know you're not going to let them. (April 3, 1984, had Spike and arguably a cactus as its only characters, hence the use of the 4th.)

Original Peanuts strips: 1971-04-03, 1984-04-04.

Transcript
Charlie Brown: When I'm twenty-one, life will open up for me! I'll be a man! I'll be a real person! I'll be an individual! Linus: This is 1971... Figure out what year that will be... {Charlie Brown does so, tongue sticking out in concentration. When he figures it out, however, he casts his eyes upward in displeasure.} Charlie Brown: 1984! Caption: In 1984... {Charlie Brown is standing on the pitcher's mound, ball in hand. Lucy stands on the side.} Lucy: Do you remember what you told my brother back in 1971? Lucy: It's thirteen years later now... Lucy: If we're twenty-one, we're pretty short, among other things... {Lucy walks away, her cap having been pulled down over her head, presumably by Charlie Brown.} Lucy: I shouldn't have mentioned it...