India, Sept. 1 -- A billboard in Chennai is gaining international fame for its clever wordplay and topical references. The billboard was put up by Assana, a colorectal and gut wellness clinic in the capital of Tamil Nadu.

While the topic of rectal health may be considered taboo by many, the clinic used clever wordplay to get its message across without resorting to anything that would be considered vulgar or obscene. Moreover, it used Elon Musk to draw eyeballs. Confused? Read on to find out how.

Tesla and SpaceX CEO Elon Musk is famously on a mission to make humanity a multi-planetary species. He has repeatedly spoken about his dream of establishing a colony on Mars.

Assana in Chennai wants to let him do just that. Its own mission is a...