evidence: Impossible Whopper Estrogen refers to an incorrect claim that the vegetarian Impossible Burger sold by Burger King fast-food chain contains 18 million times more estrogen than the regular Whopper. Published by Tri-State Livestock News on December 20th, 2019, the claim became a popular subject of memes in late December 2019. The memes explored the premise that the burger could stimulate breast growth and gender transition, similar to the Soy Boy memes. On December 20th, 2019, Tri-State Livestock News[1] posted an article written by veterinary doctor James Stangle in which he claimed that the vegetarian Impossible Whopper manufactured by Impossible Foods Inc. and distributed by Burger King contains 44 milligrams of estrogen, which is 18 million times more than 5 nanograms of estrogen in the regular Whopper. In The Washinton Post and in a number of other media,[2][3][4] this information was later proven to be incorrect, with the Tri-State Livestock News article not clarifying that the estrogen found in the Impossible Whopper is phytoestrogen, which has no confirmed effect on testosterone concentrations in men.[5]