How to fake open a knife in CS:GO

You can't really 'fake' open a knife in the game since it's all about luck and RNG when you open cases. Best you can do is joke around with friends by pretending you got one while sharing your screen but not actually showing the case opening part.

Faking opening a knife in CS:GO isn't something you can do in the game per se, as opening a knife would require an unboxing from a weapon case, which is totally random. However, if you're looking to make a fun reaction from friends, you could edit a video to make it look like you're opening a case and getting a knife. Just splice together footage of opening cases with a clip of a knife reveal. Remember, it's all in good fun, so don't use it to scam or mislead people for real!