Spider-Man: No Way Home: 24 WTF Moments
22. Flash Writes A Spider-Man Book

Flash Thompson (Tony Revolori) appears in a few scenes early on, and as expected serves primarily as comic relief, portraying himself to the media as Peter's apparent best friend in what is ultimately a blatant act of shameless self-promotion.
You see, Flash has another agenda entirely: he's quickly written a book - or more likely, had somebody else write it - about his "experiences" of allegedly being Spidey's best friend, which he of course had entitled "Flashpoint" and consequently shills to the assembled news outlets.
Isn't that just the most Flash Thompson thing ever?