The list of things you thought you'd never hear in a presidential campaign just keeps growing as Donald Trump's Republican rivals take the gloves off in an attempt to derail his bid for the presidential nomination.
Responding recent "little Marco" comments from Trump, Marco Rubio has hit Trump for having small hands when compared to how tall he is.
"You know what they say about a man with small hands..." Rubio told supporters.
As the crowd burst into applause/laughter, he added: "You can't trust 'em!"
Rubio also said Trump "doesn't sweat because his pores are clogged with the spray tan"
Then said "Donald Trump isn't gonna make America great, he's gonna make America orange."
A flood of mainstream Republican officials and donors have lined up behind Rubio in the week since former Florida Gov. Jeb Bush suspended his campaign for president. And yet Rubio's team concedes that neither the influx of support, nor the conversion of many of Bush's wealthy donors, is enough to stop Trump.
Instead of riding the wave of new support alone, Rubio has been forced to speed up plans for an all-out assault on the billionaire businessman's character.
In recent days, Rubio has dished about Trump's on-stage perspiration and alluded, jokingly, that Trump may have wet his pants. He's also taken to referring to the billionaire businessman as a "con artist" dozens of times a day while campaigning.
"It's amazing to me. A guy with the worst spray tan in America is attacking me for putting on makeup," Rubio charged as he campaigned in Georgia on Saturday. "Donald Trump likes to sue people. He should sue whoever did that to his face."
But make no mistake: Rubio's new tack is a fight for survival.
He trails Trump in virtually all of the 11 states holding nominating contests on March 1, known as Super Tuesday. The Florida senator has finished in no better than second place in the first four primary contests. Trump has won three out of four. And Texas Sen. Ted Cruz remains a top-tier contender, even after finishing in third place in the last three contests.