We've all heard of the classic 'dine and dash', right?

But who knew faking a proposal and chowing down on your (undeserved) congratulatory dessert was a thing?! Well, it is in Texas.

19-year-old Cati and 17-year-old Alex have made waves in the Twitosphere this week when they revealed they schemed their way to a free dessert after Alex 'proposed' to his mate in a high-end restaurant. 

Speaking to BuzzFeed, Cati said: "We just had to act like a couple the entire time. Everyone believed us and everyone clapped."

Cati and Alex are uber-pleased with themselves, and it seems Twitter users are pretty annoyed they didn't think of it first.

With 23,000 retweets and 47,000 likes, the public are all over this one.

"This is honestly so freaking genius," wrote one while another added: "Taking notes, we r so doing this next time we go out." (sic)

And the fake couple aren't stopping any time soon, with Cati adding: "We’re thinking about doing it other places too."

As you would…