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1.
allude is the act of using a word or phrase that has been used before and is well-known and can readily identify a situation. Most urban terms are actually allusions to past literature, songs, or iconic pop culture.
"et tu Brute" is an allusion to Ceasar but is used to describe to a friend how you can't believe he stabbed you in the back

"glitch in the system" is an allusion to The Matrix but describes a de-ja-vu
by Krystal September 21, 2004