LONDON—Britain’s top economic minds were thrown into chaos this week after the U.S. Supreme Court ruled against former President Trump’s tariffs, sparking widespread terror that British citizens may soon be able to afford American motorcycles, soybeans, and, in a worst-case scenario, Walmart brand jeans.

“We’re in talks with Washington and have deployed a team of analysts to determine how the sudden availability of affordable Gatorade will impact the British spirit,” said government spokesperson Olivia Tuppence, who has reportedly convened an emergency summit to discuss whether Twinkies should be allowed into the UK unimpeded.

Business groups are proceeding with extreme caution. “We’re prepared for the possibility that Scotch eggs could face fierce competition from the American ‘Egg McMuffin,’” said Sir Reginald Plimsoll, chair of the Royal Institute of Conservative Retailers. “This is uncharted territory.”

Meanwhile, the EU is seeking clarification on what, if any, new American products may wash ashore. “We are hopeful that the end of tariffs will not result in an influx of circus peanuts or, heaven forbid, ranch-flavored soda,” said Helga Baumgartner, an EU trade negotiator.

British consumers, for their part, remain on the fence. “I just want my Marmite to cost the same,” said Sheila Featherstone, a pensions adviser. “But if I can get a five-pound tub of peanut butter for less than £30, I suppose that’s a risk I’m willing to take.”