Conservative commentators criticized Trudeau, who has publically championed women's issues and gender equality within his government, for making up the term and interrupting the woman to correct her.
"We like to say 'peoplekind, ' not necessarily 'mankind, ' because it's more inclusive", Trudeau said.
Maybe it was his deadpan delivery, but unfortunately for Mr Trudeau, nobody seemed to pick up on his mad bants.
The Canadian Prime Minister was appearing at a town hall Q&A at MacEwan University in Edmonton on Friday, part of a tour around his nation.
The remark caught the attention of media outlets outside Canada, including "Fox and Friends", which ridiculed Trudeau for the comment during a broadcast Tuesday.
On Wednesday, Trudeau said that the joke "played well in context" of the setting - but not out of context. "Out of context, it doesn't play so well", he continued.
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"Out of context it doesn't play so well, and it's a little reminder that I shouldn't be making jokes even when I think they're amusing".
Aimee was filmed as saying, "We have received the Queen's Award in the United Kingdom, we have received many awards".
'We have received many awards, however, unfortunately in Canada, our volunteering as a religious charitable organisation is extremely hard.
"So, that's why we came here today to ask you, to also look into the policies that religious charitable organizations have in our legislation so that it can also be changed because maternal love is the love that's going to change the future of mankind-" the woman started.
Veteran Amy Graham, one of the lead plaintiffs in the case, told CTV News that the Liberal government's attempts to stop the lawsuit was contradictory to Trudeau's public support for victims of sexual misconduct. She said: 'It wasn't negative.
Meanwhile, others have argued the backlash against Trudeau is unfair and failed to mention the woman and the audience's positive reaction to his comment.