Il riait à gorge déployée = He was roaring with laughter.
Rire dans sa barbe (or, sous cape) = To laugh in one’s sleeve. (See [Cape].)
Rire du bout des dents = To force a laugh.
Rire jaune = To laugh on the wrong side of one’s mouth.
Rire aux anges = 1. To laugh immoderately; 2. To laugh to oneself.
C’est un pince-sans-rire = He is a dry joker.
Risée
Il est la risée de tout le monde = He is the laughing-stock of every one.
Roche