Boyle was absolutely gobsmacked by the strength of this reaction.
I'm gobsmacked, it absolutely blew me away.
They were—to use the vernacular—gobsmacked.
We were gobsmacked to discover later that he was not one of the instructors, but one of those undergoing temporary incarceration.
I am, to use a tactful word, "gobsmacked" at hearing that a public interest immunity has taken place in relation to that decision.
They were gobsmacked by the nasty feeling that the political situation was slipping away.
It is now clear that the chairman was gobsmacked because he saw the figures which we produced.
Would-be speakers falter, as if gobsmacked by the accumulation of tragic atrocities.