Seth Meyers
Seth Meyers mocked presumptive Republican nominee Donald Trump for flip-flopping on "Late Night with Seth Meyers" on May 9, 2016. NBC

Donald Trump has consistently promised that now that he is the presumptive Republican nominee for president he will change his tone and act more "presidential." Comedian Seth Meyers has a word for that transformation: flip-flopping.

Meyers used the "Closer Look" segment to highlight a series of issues on which Donald Trump has changed his position since locking up the GOP nomination after the Indiana primary, comparing the candidate's flexible policy platform to Mitt Romney and the infamous "Etch-A-Sketch" label that followed him throughout the 2012 presidential election.

"That hurt Romney, because gaffes use to hurt politicians,” Meyers said. “But unlike Romney, Trump is no Etch-A-Sketch. Trump is a Magic 8 Ball. You shake it up and you can get one answer, shake it again, you get something completely different.”

Meyers introduced his own version of Magic 8 Ball for Trump's policy agenda, calling it the Magic Trump Ball. The comedian then played a blistering montage of Trump switching positions on the minimum wage, tax reform, campaign finance and immigration before and after his nomination was assured.

“Now, these flip-flops are unlikely to upset many Trump supporters, but there is one thing about Trump’s campaign they do seem to care very much about — self-funding,” Meyers said, before pointing to Trump's recent hiring of a Goldman Sachs partner to court the type of wealthy donors Trump previously boasted on the campaign trail that he did not need.

Speaking of flip-flopping, Meyers ended the segment by playing a montage of GOP leaders, including former Louisiana Gov. Bobby Jindal, Kentucky Sen. Rand Paul, New York Rep. Peter King and former Texas Gov. Rick Perry, condemning Trump while the Republican primary was still in full swing. Meyers followed that up with more recent clips of each of those politicians now promising to support Trump in the general election.

"If anyone seems willing to accept Trump’s sudden change of heart, it’s the GOP establishment,” Meyers joked.

Trump became the presumptive GOP nominee after his win last week in the Indiana primary and subsequent announcements from Texas Sen. Ted Cruz and Ohio Gov. John Kasich that they would be dropping out of the race.