In most literal meaning - to subconsciously destroy otherwise smoothly going flirtation (often with just one misused word or sentence) which otherwise could very well end up in sexual intercourse.
As a metaphor - to destroy a chance for something good with silly, easilly avoidable mistake.
Synonym for self-sabotage.

A cultural and aesthetic mind-state that prioritizes making money, even as an “underground” or “radical” creator. The work isn’t made for money, but it’s the money that matters the most.