Wayback Burgers is a small fast food chain, and like a lot of companies, they pulled a mildly amusing April Fools’ Day joke: They announced a new milkshake made with crickets.

But then something weird happened: People actually wanted it. We’ve all heard about how crickets could be a good source of protein, so I guess people were intrigued by drinking them.

So Wayback tested a shake made with chocolate-flavored cricket powder and Oreos at a store in New York, and they had a line around the block for them. So now they’re selling them for real.

It’s called the Oreo Mud Pie Cricket Protein Milkshake, and you can buy it starting tomorrow. It’ll be available until September — unless it’s super popular, in which case they’re planning on making it permanent.

Oh, and while they’re doing weird stuff with shakes, they’re also going to test out a Jerky Milkshake, which includes barbeque sauce, maple syrup, and Slim Jims.