About
Science Bros is a phrase often paired with a picture of fictional characters Bruce Banner (The Hulk’s alter ego) and Tony Stark (a.k.a. The Iron Man) in various degrees of intimacy, ranging from platonic friendliness to homo-erotic.
Origin
The phrase “Science Bros” appears to have been started shortly after the release of the 2012 movie “The Avengers”. One of the last scenes in The Avengers movie depicts Tony Stark offering and invitation to Bruce Banner to reside in the Stark building to pursue research into Bruce Banner’s condition (that is, turning into the Hulk when he’s angry).
One of the first occurrences of the phrase came in a blog post from “Murder Your Darlings” [1] describing the relationship between the characters of Bruce Banner and Tony Stark in the move Avengers.