The phrase "son of a bitch" is an idiom dating back to the 17th century. Traditionally an offensive insult or interjection of anger.
“And you know what the Iranians did? They laughed at Obama, and they said, 'He's a stupid son of a bitch,'”Who is the real son of a bitch now?
Trump says Iran laughed at ‘stupid son of a bitch’ Obama over JCPOA Iran deal.
https://nypost.com/2026/06/17/us-news/trump-says-iran-laughed-at-stupid-son-of-a-bitch-obama-over-jcpoa-iran-deal/
Does the old phrase it take one to know one apply?
https://m.youtube.com/shorts/6jdJmYsPDz4
What is the story that those who live in glass houses shouldn't throw stones? The idiom means you should not criticize others for faults or weaknesses that you also have. Throwing a stone while living in a fragile glass house represents inviting immediate retaliation and destruction upon yourself.