During a town hall meeting last week, Rep. Sean Duffy (R-WI) claimed to be ignorant of trans-vaginal ultrasounds and their recent involvement in the debate over abortion rights.

Duffy was asked whether he supported the Woman’s Right to Know her Unborn Child Act, which would require a woman to receive a trans-vaginal ultrasound prior to terminating her pregnancy. Top Republicans in the Wisconsin legislature have said the bill was a "priority" and "long overdue."

But Duffy said he didn't know what a trans-vaginal ultrasound was.

"I haven’t had one," he remarked.

His comment was greeted with laughter.

"I haven’t heard of it," Duffy added. "And just like I told you I’m pro life, and I know that you are too, but I’m not willing to say I’ll support what you’re talking about because I haven’t seen the bill, even though we’re probably in agreement on that issue."

The Republican lawmaker has described himself as "100 percent pro-life without exceptions." During a debate last year, Duffy called the group NARAL Pro-Choice America "disgusting" because they supported "late term abortions and partial birth abortions." He has supported a number of anti-abortion bills in Congress.

Listen to audio, uploaded to YouTube by Wisconsin Democrats, below: