Images below are slightly NSFW.
If you can grip a pen under your boob, you can consider yourself in the big leagues -- in China's latest social challenge, at least.
The "underboob pen challenge" is going viral on Weibo, and women have been posting pictures of pens and pencils held in the crevice under their breasts. Going by the proud posters, it seems being able to do this proves that you have larger than average assets.
The meme first started in Japan as a way of showing off one's breast size. But now that it's spread on Weibo, some are pointing out a flaw in the challenge. Detractors are saying that if your breasts aren't exactly big enough to grip things, you can make up for it by having a bit more flesh on your waist.
This revelation has opened the contest to men as well, who are showing that some of them have what it takes to pass the challenge.
But some men are proving that their pecs are worthy of admiration too.
Some are skipping the breast portion of the race and heading straight for gold.
The challenge seems to have attracted enough controversy that people are going all out to prove that you can hold anything on various parts of your body, if you just put your mind to it.
Before Japanese and Chinese users put this positive spin on holding things under your breasts, the test carried more of a negative connotation. According to colloquial accounts, it was used to prove if a woman's breasts needed better support, or if she needed to wear a bra under her shirt.