This phrase is used when acting out or talking about somthing that has happend in the past. When used at the right moment this is a comical saying.
Conversation Between People
Dave "Ya know Paul, He's back with his ex Nat"
Jeromima "Ohh Not That Old Chestnut
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An idea or subject, usually flawed, which perpetually resurfaces in conversation despite having been discussed to death long ago.
A: If evolution is real then how come we never see monkeys turn into humans, huh?
B: Oh god, not that old chestnut...
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A: The cheque is in the post.
B: Don't give me that old chestnut
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A person who takes ones virginity.
"That old chestnut popped my friend Kristen."
"I'm going to bang a virgin so i can become an old chestnut."
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