What happens when a playboy engineer and timid physicist meet? A bromance. It's undeniable — Iron Man and Hulk are the coziest couple of The Avengers, and it's a relationship that's been carefully documented by Ask the Science Bros [1]. This amazing Tumblr is dedicated to Tony Stark and Bruce Banner's many science shenanigans. It's a kind of geek camaraderie only rivaled by Breaking Bad's Walter White and Jesse Pinkman.

The site is run by Stephanie [2], a 20-year-old animation student. She's turned some of her best work into t-shirts that you can snatch up over a Redbubble [3]!

The Science Bros at their best.

Source: Tumblr user askthesciencebros [4]

How to beat the heat.

Source: Tumblr user askthesciencebros [5]

Source: Tumblr user askthesciencebros [6]

Science club.

Source: Tumblr user askthesciencebros [7]

Science date.

Source: Tumblr user askthesciencebros [8]