go (as) red as a beetroot
go (as) red as a beetroot
To redden in the face (blush), typically due to embarrassment. Primarily heard in UK. She went red as a beetroot when her crush came up and talked to her. I went as red as a beetroot when the teacher made me speak in front of the whole class.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.