[C_Bomb]

I'm pushing it all in the middle.

Just like if I said Bet and the guy instantly says all in. even if I have a good hand, I'm only putting in 1bb as thats all I have to do, then decide if he has it and call or fold.

I think that the "ethics" of it is you have only said bet. You are yet to announce how much, but your opponent has decided to call without all of the info. Make them pay for the mistakes they make.