Frollo's lust for Esmeralda is a large theme in the movie.
Hugo the gargoyle flirts with a male goat.
Esmeralda does a tame version of a pole dance in the "Topsy Turvy" musical number.
During the same sequence, Clopin makes a brief reference to "strumpets" (prostitutes).
Frollo captures Esmeralda in the cathedral and as he twists her arm, he sniffs her hair. After she asks him what he is doing, she then says "I know what you were imagining!" His reply is that as a gypsy, she knows no other way than to "twist the truth and cloud the mind with unholy thoughts."
During "Hellfire", Frollo says he is purer than the "common, vulgar, weak, licentious crowd."
During a musical number entitled "Hellfire", he sees a curvaceous apparition of Esmeralda and sings "...this fire in my skin, this burning desire is turning me to sin..." and he states "...be mine or you will burn..."
Esmeralda pulls a scarf from her cleavage in two different scenes.
When Quasimodo enters Esmeralda's tent, he accidentally pulls a curtain and Esmeralda is shown from behind as being topless for a brief second, then she quickly puts on her robe after noticing Quasimodo behind her.