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Trump Brags About His Penis Size: 'I Guarantee You There Is No Problem'

AP Photo / Carlos Osorio

Rubio had introduced the line about Trump's allegedly small hands on the campaign trail earlier this week. Other Trump foes have also mocked Trump's hand size, but Rubio took the diss one step further by alluding to the innuendo.

"You know what they say about guys with small hands," Rubio said at a rally in Virginia Monday. Getting laughs from the crowd, Rubio quipped, "You can't trust 'em!"