It is a (semi-funny) response, seen a lot on social media like reddit, for example for someone with no chance of surviving a gaming battle due to enemy superior force , originally from 2014 first-person shooter Call of Duty: Advanced Warfare. Quoting know your meme :
"Press F (X) to Pay Respects is an action prompt featured in a quick time event from the 2014 first-person shooter Call of Duty: Advanced Warfare. Upon the release of the game in November 2014, many players of the game mocked the funeral cutscene for its forced element of interactivity that seemed out-of-place at a memorial service."
F "Press F to pay respect"
"Press F (X) to pay respect"
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
The grindset is a contemporary ideology of self-exploitation disguised as strength, deeply tied to the aesthetics of the “sigma male” and to new digital forms of patriarchy. It promotes the idea that human worth depends on productivity, economic success, absolute emotional control, and the ability to work endlessly, turning vulnerability, rest, community, and tenderness into signs of weakness. Beneath its rhetoric of discipline and power often lies a profound inability to relate healthily to pain, fragility, and human interdependence.
“That’s the grindset, brother. While weak men sleep and complain, sigma males stay disciplined, work in silence, suppress emotions, and build power while everyone else wastes time chasing comfort.”