Priscilla Misihairabwi-Mushonga, of the opposition Movement for Democratic Change (MDC), produced a plastic bag and took out two samples during a ministerial questions session yesterday.
"I would like to ask the minister of finance, what is the government policy on the importation of second-hand underwear which may harm women's health in the long term, but are cheap?" she said.
"If you look at the two pairs of panties that I have here: these ones are brand new and cost two dollars or more, but these ones, which are secondhand, cost one dollar for two pairs."
"Before I answer this important question, I believe the honourable member should have not gone that far to make her point," he said.
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"Anyway, I will see if I cannot make an intervention during my mid-term policy statement next week."
Misihairabwi-Mushonga was later ejected from the chamber for confronting a ruling ZANU-PF lawmaker whom she accused of making sexist remarks during her presentation.
Zimbabwe's economy has been on a downturn for more than a decade, creating dire poverty and mass unemployment.
Cheap second-hand clothes have flooded into the country, often imported from Mozambique and Zambia.
In 2012, then finance minister Tendai Biti called for a ban on the import of used underwear citing health risks and the threat to human dignity.