The Science Side of Tumblr refers to a long-running cultural trope on the microblogging platform where users jokingly or seriously tag 'the science side' to explain bizarre phenomena or nonsensical images. It gained prominence in the early 2010s, often featuring threads where a simple observation about a vampire or a gravity-defying cat results in a multi-paragraph essay on biology, physics, or chemistry. The meme celebrates the platform's unique mix of absurdity and niche expertise, allowing anyone to roleplay as a dedicated researcher. Today, it is used to satirize pseudo-intellectualism or to provide genuine, fascinating facts about mundane topics in a conversational, often chaotic format.