Pro-gun senator David Leyonhjelm found himself in an online argument on Thursday about Australia's gun control laws, in the wake of the San Bernardino shooting.
The Liberal Democrat senator has been a long time critic of Australia's strict gun control laws, last month appearing in a video for the NRA arguing that "Australia is a nation of defenceless victims".
Leyonhjelm believes Australians should be allowed to carry concealed weapons, and called for more people to have guns following the Sydney siege.
"What happened in that cafe would have been most unlikely to have occurred in Florida, Texas, or Vermont, or Alaska in America, or perhaps even Switzerland as well," Senator Leyonhjelm told the ABC at the time.
Twitter user Nick Schadegg challenged the senator on his argument that Switzerland was a nation that had lax gun laws but no mass shootings. But Leyonhjelm was having none of it.
Schadegg tried to engage him in an argument about Switzerland's laws, but Leyonhjelm kept dismissing it as "utter crap".
What else could he do?
Most. Polite. Twitter. Shutdown. Ever.
"I'm surprised he didn't believe me that I'm Swiss, given that my last name is Schadegg," he told BuzzFeed News.
"I can see why he was getting a bit sweary," he said. "David's had a hard-on for Switzerland's gun culture for years now, but he's also against compulsory military service.
"So if I'm right (which I'm almost certain I am) then he probably has to rethink some stuff."