I married an asshole, she thought, knifing into the waves, reflects a sense of disillusionment and frustration within a marital relationship. The protagonist feels betrayed or disappointed by her partner, suggesting emotional pain and a tumultuous relationship. The imagery of knifing into the waves adds a metaphor for intense emotional turmoil or conflict that the character experiences.

From Carl Hiaasen's novel Skinny Dip, this line highlights themes of betrayal and personal struggle. The vivid imagery captures the protagonist's inner turmoil, emphasizing feelings of anger and disillusionment with her marriage, encapsulating the emotional chaos and difficult realities faced by the character.