So you want the new adult Happy Meal from McDonald's? Get in line, pal.

No, seriously, get in line because it might take a while to get it. The meals, which come with toys designed by the streetwear company Cactus Plant Flea Market, have proven to be a hit, which is unfortunate for the McDonald's employees who are on the front lines. It looks like we may have a Rick and MortySzechuan sauce debacle on our hands.

Employees are reportedly stressed by the number of people who file in to get the limited supply of the adult Happy Meals. The workers "are begging customers to stop ordering adult Happy Meals," Fortunewrote. "I can see the stress among my coworkers," a McD's employee told Kotaku. 

When you order the meal, you have the choice of a Big Mac or 10-piece nugget, and that includes fries and a drink, plus the limited-edition box and toy from Cactus Plant Flea Market. The nostalgia is making it a legit craze.

On a subreddit for McDonald's employees, people have been venting their frustrations over dealing with customers coming in for the meal. Read one comment:

first day we had them was the most stressed i've ever been at work. we had a huge storm too and were down 3 people in addition to the 5-6 that had called out. it was exhausting. we ran out the same night but got more today. can not waitfor my next shift.

If there has been any saving grace for McDonald's employees, it's that they're running out of the adult Happy Meals. The subreddit was full of comments from people saying they were thrilled that their store had run out of the boxes and toys. Comments like, "everyone in my store was happy when we ran out of toys," are quite common. And, at least if the subreddit is to be trusted, lots of stores have run out.

Anecdotally, I've tried getting one to test out for Mashable since I wrote an article about the adult Happy Meal on Tuesday. My local McDonald's has been out the entire time. Here's how the app looks on my phone when I go to order the Cactus Plant Flea Market meal.

• McDonald's adds adult Happy Meals to the menu. Yes, you get a toy.
• McDonald's re-engineered super-straw is not an early April Fools joke
• 'Gold diggin' dog scams McDonald's customers pretending to be a stray, owner says
• 'Rick and Morty' fans: Szechuan sauce turned us into a 'Rick and Morty' joke
• McDonald's had to be trolling with this Shamrock Shake tweet

Still, it's not stopping people from trying. In fact, its exclusivity is only making it more of a hot commodity.

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It doesn't seem like interest is going to wane anytime soon. Apologies to the folks working at the McDonald's stores. People just can't resist a toy.