But they’re about language, so I guess it’s okay. First the pun. It’s the last word in the comic.
And that leads to the less jokey joke, use of a figure of speech that we call alliteration. Alliteration is when you start two or more words with the same letter. The Peter Piper tongue twister is a good example of alliteration. The fewer non-matching words you have, the better the alliteration is considered to be, and the non-matching words should never be emphasized. So this comic is a decent example of alliteration.
It’s still bad, though. But I like it. Thank you, Stephen Beals.