241543903 (a.k.a “Heads in Freezers”) is a numerical keyword associated with a photo meme that involves people taking pictures with their heads in the freezer & sharing them online. By tagging a series of image files with a cryptic number, a high level of search engine optimization can be easily achieved. As a result, typing “241543903” into image search engines like Google Images successfully yields pages after pages of pictures showing people’s heads in freezers.
In 2009, David Horvitz started the “Heads in Freezers” meme. Participants took photos of their heads in freezers, tagged them with “241543903” and uploaded them to social media sites like Tumblr.

Shironeko, also known as “Basket Cat”, is a Turkish van cat called “Shiro”, which is best known for his extremely relaxed demeanor and ability to balance things on his head, similar to Oolong the Pancake Bunny. The cat has been given several nicknames by its fans, most notably “Basket Cat” and “Zen Cat.”

A man covered with thermal blanket walks along railway tracks beside an improvised refugee camp on the border line between Macedonia and Serbia near the northern Macedonian village of Tabanovce, Thursday, March 10, 2016. Around 1.500 migrants and refugees are stranded at Tabanovce transit center for refugees in northern Macedonia. (Photo by Boris Grdanoski/AP Photo)

A couple embraces at the San Fermin festival in Pamplona, northern Spain, July 10, 2016. (Photo by Eloy Alonso/Reuters)

UK Love Island's Maura Higgins attends the Pretty Little Thing X Molly-Mae party at Rosso on September 01, 2019 in Manchester, England. (Photo by Splash News and Pictures)

American media personality Courtney Stodden attends the Mercy For Animals 20th Anniversary Gala at The Shrine Auditorium on September 14, 2019 in Los Angeles, California. (Photo by Alberto E. Rodriguez/Getty Images)

American actress and model Karruche Tran arrives at Highlight Room for a Halloween party in Hollywood, CA. on October 29, 2019, dressed as Nancy Callahan from “Sin City”. (Photo by Backgrid USA)

Kim Kardashian filming scenes for Ocean's Eight in Downtown Los Angeles on March 6, 2017. (Photo by Clint Brewer/Splash News and Pictures)