not know (someone) from a bar of soap
not know (someone) from a bar of soap
To be completely unaware of or know nothing about someone; to have never met the person indicated. My girlfriend got really excited when a movie star apparently walked past us, but I wouldn't know him from a bar of soap. Someone I wouldn't know from a bar of soap just contacted me online, claiming to be a distant relative.
See also: bar, know, not, of, soap
Farlex Dictionary of Idioms.
- have no idea
- not have the first idea
- girlfriend
- be wild about (someone or something)
- none the wiser
- not have the slightest idea
- unknown to (one)
- unknown to somebody
- unbeknownst to (one)
- unbeknown to (one)