that'll be the frosty Friday
Synonym of that'll be the day (“said in reply to something that one believes will never happen”).
VERBS
be, look
become, get, turn
The garden got frosty overnight, so we had to protect the young plants.
remain, stay
ADV
very
PHRASES
cold and frosty
We woke up to a cold and frosty morning, so we decided to stay inside with hot chocolate.
VERBS
be, look, seem
become, turn
Her attitude turned frosty when she realized he had forgotten their anniversary.
remain
ADV
decidedly, distinctly, positively, very
The welcome I received from my ex-boyfriend's new girlfriend was distinctly frosty.
pretty