On Sunday night, the House of Representatives passed a $875 billion healthcare bill with a vote of 219-212. While discussion of the news is currently dominating the social web, a specific moment from the proceedings is also getting attention – a member of the House yelling out “baby killer” as Rep. Bart Stupak was speaking.

According to Trendistic, about 0.4 percent of all tweets from 11-12PM ET contained the phrase (about 2 percent included “HCR” – the acronym for healthcare reform). The moment is reminiscent of back in September, when Rep. Joe Wilson shouted out “You Lie!” during a speech delivered by President Obama.

At this point, it’s not known who uttered the “baby killer” comment. Whoever it was though will likely become something of Internet lore – Wilson’s outburst made him the 7th most discussed person on Twitter in all of 2009 and has been the subject of numerous video parodies and mashups (he had the misfortune of having an outburst around the same time as Kanye West).

The “baby killer” comment can be heard at around the 7 second mark in the video below:

Tags: bart stupak, healthcare reform, Joe Wilson, video, viral video, youtube