lad name
The name a guy had before he got married. It’s like the guy’s old identity. You keep it if you’re too lazy to change it.
He kept his lad name because he was too lazy to pick a new one. Now he’s still called ‘Bob’.
My uncle’s lad name was Baker. He kept it and now he’s ‘Baker-Baker’.
She kept her husband’s lad name. Now she’s the only one who remembers it.