Dude: Hey dude guess who I am?
Viewers: Dora.
Trump: No, I am President Trump.
Viewers: Why are you wearing Dora’s clothes and backpack?
Trump: Today we are going to build a wall.
Viewers: NOOOOOOOOOOOOOO!
Dude: Hey dude guess who I am?
Viewers: Dora.
Trump: No, I am President Trump.
Viewers: Why are you wearing Dora’s clothes and backpack?
Trump: Today we are going to build a wall.
Viewers: NOOOOOOOOOOOOOO!
Alright listen up, you knucklehead! So, the joke is that Trump is dressed up like Dora the Explorer and says he's gonna build a wall. It's funny because it's unexpected and mixes a kids' show with Trump's famous promise to build a wall on the border. Plus, you probably watch Dora and think that the wall will be built in the show. SAD!