Americans have been hearing about Donald Trump's proposed wall on the U.S.-Mexico border since the businessman's presidential campaign began last summer. On Sunday, HBO's "Last Week Tonight" host John Oliver tried to tear down that wall — or, at least the idea of building it in the first place.

Oliver devoted nearly twenty minutes of Sunday's episode to breaking down Trump's border wall proposal. The comedian concluded that the wall, which has become one of the key points of the Republican presidential front-runner's campaign platform, is probably not a very good idea. 

“It’s a big, dumb thing that only gets more expensive over time,” Oliver said. “It’s like getting a pet walrus. You think it’s stupid now? Wait until you learn what a bucket of sea cucumbers costs. You’ve not prepared for that.”

Oliver mocked Trump for raising the cost estimate of the proposed wall from $4 billion to more than $10 billion in speeches over the course of his campaign. Oliver estimated that, based on the dimensions that Trump has laid out, that costs of materials, engineering, and construction of Trump's wall would actually be well beyond $25 billion dollars. Plus, the comedian cited analysis by the Congressional Budget Office that concluded the costs of maintaining such a wall would exceed construction costs in just seven years. 

After pointing out that Mexican government officials have rejected the idea that Mexico would pay for the wall and that the wall would likely not do much to prevent illegal immigration or drug smuggling, Oliver put forth an alternative solution.

“I suggest that instead of building the wall, we use the money to buy every man, woman and child in America a Palmer Waffle Iron,” Oliver offered. “These beauties retail at $75 apiece, so we’d still have nearly $1 billion left over. This waffle iron plan will cost less, will do nearly as much to keep out immigrants and drugs, it won’t harm our relationship with our third-largest trading partner...and unlike Donald Trump’s wall, this makes f------ waffles.”

Despite the potential holes in Trump's trademark proposal, the candidate still holds a commanding lead in the delegate count over his GOP rivals. Trump holds 678 delegates. Texas Sen. Ted Cruz is a distant second with 413 delegates, followed by Ohio Gov. John Kasich with 143 delegates.