You know what it looks like… but what is it called?
TAKE THE QUIZ“[you] can't”
The following 3 entries include the term [you] can't.
you can't know
idiom: you cannot be fully aware (of the extent or degree of something)
you can't miss it
idiom—used to say that it is impossible not to see or notice something
you can't teach an old dog new tricks
idiom—used to say that a person who is old or is used to doing things in a certain way cannot learn or does not want to learn a new way
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Merriam-Webster unabridged