It's the motto on the cover of some French humor/comics magazines. Sardonic, very iconoclastic, and definitely not safe-for-work in the USA ...

One of the best artists was http://en.wikipedia.org/wiki/Jean-Marc_Reiser , and you can also search for the Hara-Kiri and Charlie Hebdo magazines images (NSFW, as cautioned above).

P.S. Forgot to mention also http://en.wikipedia.org/wiki/Georges_Wolinski , who seems to be still active.