An expression meaning "That'll never happen". Shortened from "That'll be the day when (insert ubsurd impossible occurence here, such as 'Pigs will fly')"
by lovehorses94 May 13, 2008
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That'll be the Day...
• that'll be the frosty friday
• I'll be doing that!
• DAamN Ii'll bE CHoKen oN tHaT sHit lOooKEn dRY aS HeLL
• Who know moms are really good, I don’t you to your mom is perfect dancer, bro fool my mom, not that good at dancing, you’ll be lucky you lucky
• that'll do pig
• That'll Learn You
• That'll show them
• that'll
• That'll Buff