When he took off his hat, we saw that he was as bald as a coot! 他脱帽后，我们发现他头全秃了！
He was as bald as a coot by the time he was 20.
He was skinny, bald as a coot, and he didn't have a tooth in his head.
Did you know he's as bald as a coot under that wig?
I don't care if you're as bald as a coot - I still love you!
See also: bald (NO HAIR)