Alexander J.A Cortes highlights the phenomenon of women who base their identity on being sarcastic:
Furthermore, if a central aspect of her personality is sarcasm, she is fundamentally based in deception. It is gaslighting. You can never tell when she is telling the truth of her feelings with a snide remark, or when she is joking: and both options kind of suck.
Excessive and omnipresent sarcasm is deeply toxic and inevitably corrodes relationships and marriages. All relationships should be based on honesty, directness, and goodwill. Making a habit of deceiving your partner, even in jest, builds an icy cage around both hearts.