Jimmy Fallon's Donald Trump calls 'Barack Obama' to celebrate Indiana win

Donald Trump didn't just win Tuesday's presidential primary in Indiana; since Ted Cruz and John Kasich dropped out immediately afterwards, he also cinched the Republican nomination. So on Wednesday's episode of The Tonight Show, Jimmy Fallon envisioned how Trump might have reacted to his victory.

The answer is, apparently, call President Barack Obama (Dion Flynn). Fallon's Trump bragged about how he was now "the Republican president" and "come November, I'm going to be voted Captain America." But even though Trump now has the nomination all but secured, his presumptive opponent, Hillary Clinton, is still fighting off Bernie Sanders, a fact that both amused and confused the skit's participants.

"What is it with that guy? You can't get rid of him. He's like glitter," Flynn's Obama said. "You think he's gone, and then four days later you're like, 'What the hell are you still doing there?'"

RELATED: Celebrity Endorsements 2016: See Stars' Political Affiliations

Fallon's Trump went for a Jon Snow comparison, leading Flynn's Obama to complain about spoilers (unrealistic, since we all know now that Obama gets advance screeners of Game of Thrones). After Fallon's Trump complained about the size of Westeros' Wall (not big enough for him), Flynn's Obama tried to give Fallon's Trump some advice. Fallon-Trump, naturally, responded by making a birther joke.

"Don't make me go Lemonade on your ass," Flynn-Obama said. "Cause I will."

"Watch it, you don't want to mess with Donald with the good hair," Fallon-Trump said.

Watch the full clip below.