red as a beet

red as a beet

Flushed from embarrassment, sunburn, physical effort, or some other cause. Although many of the similes involving red are very flattering, notably lips as red as a cherry or cheeks as red as an apple, being red as a beet is not: for example, “After six hours over a hot stove, Jane was red as a beet.” Neither is red as a lobster, as in “A day at the beach left Bill as red as a lobster.”
See also: beet, red
References in classic literature ?
But Ruby Gillis says she saw him writing something on her slate and when Prissy read it she blushed as red as a beet and giggled; and Ruby Gillis says she doesn't believe it had anything to do with the lesson."
I just swept her a look of freezing scorn and she got as red as a beet and spelled it wrong after all."
Uncle Roger had never done such a thing in his life and he turned as red as a beet and looked down and muttered, 'E-r-r, please excuse me--I--I'm not accustomed to doing that.' Then he looked up and the old lady said 'Amen,' loudly and cheerfully.