I'm a tomato
When someone is so shy or so nervous their face looks like it’s on fire and they’re about to pass out
She said 'I'm a tomato' when she had to give a speech in front of 300 people.
He texted me 'I'm a tomato' after he got asked out and stuttered the whole time.
My brother yelled 'I'm a tomato' after he got into a fight with his best friend in front of everyone.