He's almost as funny as his brother.

Under the guise of debate prep, Colbert got presidential hopeful Governor Jeb! Bush to put a little Trump in his step (stump?). Addressing "the Orange Elephant in the Room," Bush read some Trump-ular lines off the teleprompter, and was surprisingly convincing. 

"I will build a wall between the United States and Iran, and get Mexico to pay for it!" In a calculated way as not to alienate crazy Republicans, Bush lowered his voice a little, flattening his palm and raising his hand to do the iconic Trump gesture. 

Sources: The Late Show with Stephen Colbert