Do you know why Barack Obama won the Presidential Election?  Then check out this funny Chinese ad for Durex condoms on Sina Weibo.

The naughty ad juxtaposes photos of first lady Michelle Obama and Ann Romney with their individual fingers to illustrates sizes.

Look at the ‘big difference‘ between these two pictures of lady Michelle Obama and Ann Romney, wife Mitt Romney.

The caption in Mandarin says: ”The difference between Obama and Romney is…”