They didn't need a driver They walked a thousand miles He left her on the roadside He thumbed himself a ride He swore he'd never leave her, he meant it till he did He swore he'd never leave her, he meant it till he did Before you say you're lucky, before you say he's good Knock on wood Broke you promise, broke your word He's climbing up a ladder Heaven has begun He's found another angel She'll take him down a rung or two She swears she'll never leave him, she means it but she will She swears she'll never leave him, she means it but she will Before you say you're lucky, before you say she's good Knock on wood She swears she'll never leave him, she means it but she will She swears she'll never leave him, she means it but she will Before you say you're lucky, before you say she's good Knock on wood Broke your promise - Knock on wood Broke your word - Knock on wood