Bruising, damaging, relentless. TikTok CEO Shou Zi Chew faced four-and-a-half hours of questioning at a US congressional hearing on Thursday.
As one congressman pointed out, some people run marathons quicker than that.
Mr Chew will certainly be feeling it, after a torrid time giving evidence. Many tech execs have stood before Congress, and they often don't get an easy ride.
But what was exceptional about this hearing was the stubborn, never-ending line of vicious questioning.
From both Democrats and Republicans, there was no let-up. A spokesperson for TikTok said afterwards the politicians were "grandstanding". There is most certainly some truth to that. But between the sometimes frustratingly verbose questioning, we did learn a thing or two.