Story highlights Marco Rubio with one of the debate's memorable lines

Critics and conspiracy theorists had a lot to say

(CNN) The philosopher-warriors of social media were burning up Tuesday night over Marco Rubio's economic pitch at the Republican debate.

"Welders make more money than philosophers," the Florida senator said, making the case for an expansion in vocational training. "We need more welders and less philosophers."

The line is a staple of Rubio's stump speech, but he gave it a national debut in Milwaukee, at the fourth Republican debate.

During an appearance on Fox and Friends on Wednesday morning after the debate, the hosts joked that Google searches for welding classes went up 1300% and said there were philosophers now probably wishing they were welders.

"If you can find a philosopher that can weld, that's pretty good," Rubio quipped on Fox.