I just today found out that the “press F to pay respects” meme is

TWITCH Emote press F to Pay Respect

Press F To Pay Respects Meme - Funny F Key Keyboard Gaming T-Shirt : Clothing, Shoes & Jewelry

Press F to pay respects - 9GAG

All the emotions, Press F to Pay Respects

Press F to pay respects : r/memes

What Is “Press F To Pay Respects?”

The Meaning of “Press F to Pay Respects” And Its Origin

Did you know you can “Press F To Pay Respects” in Modern Warfare 3 Zombies? - Softonic

Press F to pay respects : r/FORTnITE