Why did Trump decide to build the wall?
Because China built a wall and they do not have any Mexicans.
Why did Trump decide to build the wall?
Because China built a wall and they do not have any Mexicans.
The joke plays on the idea that Trump's decision to build a wall was based on China having one, and implies that the reason for the wall is to keep out Mexicans. It's funny because it's a simple explanation for a complex political issue.
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omg
bomboclatFAM
nah but you have a point