言え used both as negative and positive imperative


In the following examples the same imperative form is used for two opposite
meanings:

  1. 「ウンと言え！」 "say yes!" "agree!"
  2. 「バカを言え！」 "don't talk stupid!"

Clear from context, but I wonder what do Japanese people hear in their minds
in the second case? Is it simple "バカを言えない"? Or is it unfinished clause, like
"バカを言えば..." (something like "talk more stupid, then..."?




It's definitely imperative and it sounds "Talk whatever stupid!".




It's definitely imperative and it sounds "Talk whatever stupid!".

