it means "pay respects", and it's become quite a meme, to "pay respects" to users on the Internet, when it's required. It comes from a video game, where there's an interactive funeral cutscene, that almost exaggerates the "interactive" part. It gives you exaggerated dialogue options, like, "Press F to Pay Respects" which, in itself is a bit useless of a feature.
Caption this Meme
