|that a boy/that a girl
||good work, well done, 'at a boy, 'at a girl
||Whenever I get a good grade, she says, "That a boy, Reid!"
|that is that
||(See and that's that)
|that takes the cake
||that is the strangest or loudest or wildest etc.
||I've seen big pumpkins, but that takes the cake! It's fifty pounds!
|that'll be the day
||that will never happen, not on your life
||Me? Wear a ring in my nose? That'll be the day!
|that'll be the frosty Friday
||that day will never come, don't hold your breath
||Canada become part of the US? That'll be the frosty Friday!
|that's a corker
||that is unusual, that is amazing
||"The baby weighed 12 pounds." "Wow, that's a corker!"
|that's a crock (of shit) [B]
||that is not true; bullshit; crap
||A Mustang is faster than a Corvette? That's a crock!
|that's all she wrote
||that is the end of the story, there is no more
||At the end of the lesson he said, "And that's all she wrote. Any questions?"
||that is good/fine/OK, that is groovy
||When we gave Fonzie a leather tie, he said, "That's cool."
|that's his bible
||that is his rule book, code or main reference
||The Oxford English Dictionary - that's her bible.