In a rather unusual campaign stop at a fruit farm in Waterloo, Ont., Conservative Leader Stephen Harper used props and cash register sound effects to illustrate the impact of "Liberal tax hikes."

Harper introduced the audience to Nicole Ropp and her family to provide an example of how the hikes would impact families like them.

"Under a Liberal government, [the Ropps] would lose $3,360 in annual child care cheques. So let's quite literally put that money on the table."

Ropp proceeded to drop currency notes on a table, while the ka-ching of a cash register repeatedly played over speakers. The table was adorned with a large sign labelled "The Cost of Liberal Tax Hikes" and a faux pay stub with red, negative amounts.

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Conservative supporter Nicole Ropp throws money on a table to illustrate how Liberal tax hikes will affect Canadians during a campaign stop in Waterloo, Ont. (Jonathan Hayward/Canadian Press)

This went on for about a minute and five seconds. Harper mainly stood in silence while Ropp dropped the money on table, though he adjusted the bills and made quips every so often.

"Now you know why I really have all the police ringing this," he said, to laughs from the audience.

When Ropp finished putting the bills on the table, Harper talked about the additional cost of families losing income splitting. Ropp proceeded to put more bills on the table to the cash register sounds.

Many thought the Tories were paying a nod to the beloved game show, The Price is Right...

... while some likened it to other memorable game shows.

Others seemed really irked by the sound of the cash register.

It drew comparisons to another memorable noise from the campaign.

There were throwback references to the infamous timing instrument (what sounded like an egg timer) from the Globe and Mail leaders' debate on the economy from back in September.

Twitter users were quick to comment on Harper's role during the moment.

The campaign stop was taking place at Martin's Family Fruit Farm, just outside of Kitchener-Waterloo, locally referred to as K-W.

And some opted to be more serious, pointing out faults with Harper's portrayal of the Liberal plan.

This Liberal supporter tweeted a graph of the Liberal child benefit plan from their "Fairness for the Middle Class" document. The graphs shows the comparisons between the Liberal plan and the Conservative plan.

Liberal Leader Justin Trudeau responded to Harper's attacks on his plan on Monday, calling them "misleading" and "desperate".