also known as the 11th commandment, is essentially a rule where you need to think hard about what you're about to say to make sure that you don't say something bad that happens to apply to you too.

to put yourself in a corner by your own statement or action.
ghost 1: man ghosts are such losers

ghost 2: dude, you're a ghost.

ghost 1: bro, you're right

ghost 2: check thyself before thy wreck thyself...
by count philosopher March 23, 2016
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also known as the 11th commandment, it is a sentence used when someone makes a fool of someone for something that also applies to them.

also a great advice.

many variations exist, like:

"check yourself before you wreck yourself"

or the more correct version of this one :

"check thine self before thou wreck thine self"
example 1.

ghost 1: - "man ghosts sucks"

ghosts 2: - "you know you're a ghost right?"

ghost 1: - "holy ghost! you're right"

ghost 2: - "check thyself before thy wreck thyself"
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example 2:

online scrub - "you're grammar sucks"

online proud fedora owner - " *your* check thyself before thy wreck thyself"
by count philosopher March 24, 2016
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