The Brief: The "knock on fake glass" TikTok trend consists of creators performing a sequence of fist pounds on imaginary glass.

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TikTokers are pretending to knock on fake glass as part of a new trend. Typically, creators perform a sequence of fist/palm pounds against a glass window, before revealing the window is actually open and there isn’t any glass. Another form of this trend sees creators simply pounding their fists against the air, nowhere near a window. The trend became popular in early February.

These videos are performed to “Chapter 1’s Main Theme (Extended)” from the Corpse Party: Blood Covered video game soundtrack along with a voice saying, “That’s some bullsh*t.”

@kategreen_04

#ItWasntMe #DoritosFlatLife #TurboTaxLivePick6 #greenscreen #GetReadyWithOldSpice #ThisorThatSBLV

♬ Berleezy thats some bs – kay

@ling358.03

πŸš—πŸš—πŸš—

♬ Berleezy thats some bs – kay

Memes have also emerged in which creators pound their fist to show their frustration with a situation described in their on-screen text.

Dating:

@allie.bawse

♬ Berleezy thats some bs – kay

Phone storage jokes:

@knife.goblin

Had to delete Spotify to make this one πŸ˜”

♬ Berleezy thats some bs – kay

Employment:

@jaky__garcia

Icky😀#fyp #foryoupage #ItWasntMe

♬ Berleezy thats some bs – kay

There’s also an ongoing challenge about whether the trend begins with a fist or a flat palm.

@jay_nhg

#foryou #fy #fyp #explore #foryoupage #explorepage #fyi #foryoupageofficiall #foryouu #viral #fake #window #mime

♬ Berleezy thats some bs – kay