He's been the butt of jokes for years, but Donald Trump was handed perhaps his biggest insults yet when David Letterman made a surprise appearance during Steve Martin & Martin's Short's San Antonio Comedy show over the weekend.

The retired Late Night host stopped by his fellow comedians' A Very Stupid Conversation show over the weekend, where he joked that he regretted retiring when he did because he missed several opportunities to make fun of Trump's candidacy for the 2016 Presidential ticket as a result--before pulling out a piece of paper and reading off a Top Ten list he wrote which made fun of Trump, his famous hair, and his recent comments about Mexicans while announcing his bid.

"A lot of people think we would know everything by now about a man, Donald Trump, a high profile fellow, somebody who doesn't shy away from every aspect of his life," Letterman said. "But take a look at the list I have here tonight: Interesting Facts About Donald Trump"

"No. 10: That thing on his head was the gopher in Caddyshack. No. 9: During sex, Donald Trump calls out his own name. No. 8: Donald Trump looks like the guy on the lifeboat with the women and children. No. 7: He wants to build a wall? How about building a wall around that thing on his head? No. 6: Trump walked away from a moderately successful television show for some delusional bulls--t...oh no, wait...that's me. No. 5: Donald Trump weighs 240 pounds--250 with cologne," Letterman continued. "Nop. 4: Trump would like all Americans to know that thing on his head is free range. No. 3 (tie): If president, instead of pardoning a turkey on Thanksgiving, he plans to evict the family on Thanksgiving.No. 3 (tie): That's not a hairdo, it's a wind advisory. No. 2: Donald Trump has pissed off so many Mexicans, he's starring in a new movie entitled No Amigos. No. 1: Thanks to Donald Trump, the Republican mascot is also an ass."

Trump has not officially commented on the comedy skit--though he has been causing a storm on Twitter with his comments following the news that famous drug lord El Chapo has escaped from a Mexican prison.

"Mexico's Biggest drug lord escapes from jail. Unbelievable corruption and USA is paying the price. I told you so! Can you envision Jeb Bush or Hillary Clinton negotiating with 'El Chapo,' the Mexican drug lord who escaped from prison?...Trump,however, would kick his ass!" he wrote in a series of tweets. "Now that the Mexican drug lord escaped from prison, everyone is saying that most of the cocaine etc. coming into the U.S. comes over border! But that's what I've been saying. Very unfair treatment by the media!"

"The U.S. will invite El Chapo, the Mexican drug lord who just escaped prison, to become a U.S. citizen because our 'leaders' can't say no! El Chapo and the Mexican drug cartels use the border unimpeded like it was a vacuum cleaner, sucking drugs and death right into the U.S.," he continued. "Likewise, billions of dollars get brought into Mexico through the border. We get the killers, drugs & crime, they get the money! When will people, and the media, start to apologize to me for my statement, 'Mexico is sending...,' which turned out to be true? El Chapo...The joke around town is that I freed El Chapo from the Mexican prison because the timing was so good w/ my statements on border security...El Chapo comes into the U.S. often thru our border--it's been revealed he had CA drivers license."

Trump still has yet to comment on Letterman's joke.

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Donald trump, David Letterman