你若再说这话，我就把你揍扁。

I'll thump you if you say that again.

《牛津词典》

我谅你也不敢——谁敢的话，我就揍扁谁。

I dare you to knock it off--and anybody that'll take a dare will suck eggs.

youdao

如果再让我逮住你偷窃，我非把你揍扁不可！

If I catch you stealing again, I'll beat the daylights out of you!

youdao