Don't know French myself but found this at another website which people may be interested to know
be warned if you are a prude and can't stand cursing u best not read this
"Nom de Dieu de putain de bordel de merde de saloperie de conard d'encule de ta mere"
It's like wiping your arse with silk, I love it.
Translation:
Nom de Dieu - Name of God
de putain - hooker, b*tch, s!ut
des fils de pute - son of a b*tch
de bordel - means whorehouse but in this sentance means something closer to "sh*t," we just don't really have translation for it
de merde - sh*t
de saloperie - bullsh*t
de connard - sh*thead/****a$$
d'encule de ta mere - this one I'm not completely sure on, but I'm pretty sure it means "mother f*cker" or "f*ck up your mother's a$$"