Not neccesarily in french though. Can be in German or Italian.
Usually used by couples (generally gay, see example) as a foreplay to French kissing. Also an alternative side play.
Herr Adolf: Benevuti, il Duce... (eyes downcast)
Musollini: Bona Serra mi Bella Fuhrer! Mi Bella Adolf...(crying hysterically)
Herr Adolf: "Warum? Warum liebst du mich nicht? Ich hab keine Lust fur diese scheisse..."
Adolf and Benito slowly looked each other in the eyes and found a mutual understanding and clasped hands.
Benito looked ashamed. "Mi dispiache, Adolf..." he says, apologizing for sympathizing with the Allied Forces and pursuing a truce.
"Wir gehen zu Bett jetzt und alle ist sehr gut", Hitler said with a sly, foxy smile and with that tone of boyish charm which once won Rommell "The Desert Fox"'s heart during the war in the Balkans.
(Kissing and butt plugging ensue)