A meme made in Thatcher's operator video, has become a meme for people who use or get killed by a laser sight attachment.

In video games, when a player is using a weapon with laser sights as an attachment and you get shot by that weapon, it isn't uncommon to use the phrase. It is used when you are partially blinded on the screen by the sight, or all you can see is the sight from behind cover.

You can also replace the word fookin with either shitty, op, cancerous..