Top Definition
The unexpected feeling of intense pleasure gained by inadvertantly hearing a song that you heard when you were on MDMA; a state that reminds you why you do drugs; yet more evidence of the positive long-term effects of psychoactives.
"Fuck me, what's this song?"

"Skream's remix of In For The Kill by La Roux, why?"

"I feel so pleasant right now...it's totally giving me a de ja high...

...Play it again."
by CaptainHaddock July 25, 2009
6 Words related to De ja high

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