Meaning of high on one's own supply | Babel Free

Definitions

1. (of a drug dealer) Using the drugs which one sells, especially to excess.
   literally, not-comparable
2. Assigning too much credibility to exaggerated favorable descriptions of one's character, achievements, or prospects; intoxicated by one's own braggadocio; enamored with one's own overvalued public image.
   figuratively, not-comparable

Examples

“The relentless pursuit of realising his imagination on the big screen has come at a personal cost. […] The director admits he used to play up to the "image of what a film-maker was supposed to be. […] [D]on't get seduced by your own stuff. Don't get high on your own supply."”

“Trump […] seems to have gotten high on his own supply — he actually seems to believe the bizarre conspiracy theories his supporters drum up to excuse his actions.”

“Tapper reminded viewers that there had been a lot of magical thinking lately on the part of Democrats and liberal pundits, who spent too much time entertaining pie-in-the-sky dreams […] imagining a landslide victory for Biden. "As they say, 'You can’t get high on your own supply,'" Tapper zinged.”

CEFR level