someone's head swells

someone becomes conceited

自以為是

I am not saying this to make your head swell.

我這樣說(shuō)不是為了讓你感到自以為是的。

if I say this, you'll get swollen-headed.

要是我這么說(shuō)，你肯定會(huì)覺得自己了不起的。