Haters gonna hate, but Elon Musk just shakes it off. Over the weekend, the entrepreneur revealed Tesla short shorts—a best-selling dig at Tesla shorters (folks who borrow then immediately sell a stock, planning to buy it back later for less money).

The company's stock rose to record highs last week, after Tesla reported better-than-expected deliveries during the second quarter. Instead of silently enjoying this victory, though, Musk took to Twitter for a victory lap.

"Who wears short shorts?" he tweeted on Thursday, alongside a couple of rolling-on-the-floor-laughing emojis. "Tesla will make fabulous short shorts in radiant red satin with gold trim," he said in what, at the time, sounded like a juvenile joke. Three days later, a pair of Tesla short shorts—with a red satin and gold trim design, as promised—hit the company's online shop.

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The product proved so popular, Tesla's website briefly went down, according to Musk. As of Monday, only the XL (U.S. women's size 16-18) remain. Orders are expected to ship within two to four weeks. Featuring the word "S3XY" on the backside (a reference to Tesla's vehicle lineup), the barely-there bottoms are on sale for $69.420—another of Musk's lowbrow jokes, alluding to the sex position and slang for marijuana consumption, respectively.

"Celebrate summer with Tesla short shorts," the product page said, encouraging customers to "run like the wind or entertain like Liberace," whether relaxing poolside or lounging indoors. "Enjoy exceptional comfort from the closing bell." The CEO, who just settled fraud charges brought against him by the Securities and Exchange Commission, even mocked the government agency, writing last week that he would "send some to the Shortseller Enrichment Commission to comfort them through these difficult times."

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