Honi soit qui mal y pense 4
From an animated banner ad I've seen recently at dictionary.com:
Having trouble getting motivated?
Sisters drive each other to do another lap.
Wow — lap-dancing with incestuous undertones, what more can you wish for?
(Actually, as the text on the next page of the ad explained, it's for some public health programme named Everyday Choices for a Healthier Life, and the ad apparently specifically targets African-American women — hence the reference to sisters, I guess.)