OTTAWA—Maybe he meant to call him a shiddle diddle, as the Twitterverse suggested.

The 2011 version of 1971’s “fuddle duddle” was blurted suddenly.

An uproar ensued on the government benches. Trudeau stood to apologize, but only got the chance to do so after Question Period.

There was no denial from the heir to Pierre Elliot Trudeau’s foul-mouthed mantle, just a mea culpa.

It was a fitting end to a bullish parliamentary session.

Outside the Commons, Liberals and NDPers vented their frustrations and pointed fingers at the government.

“I was raised better than that, to not use swear words in public,” he added.