Ever heard of metaphors that pretty lady in silk, but filled with cunning. "roses" roses, so although there will be an external shape that includes a beautiful fragrant scents invite inhalation but it has thorny spikes. If you are not careful they may contact injury made easy.
Ever heard of a metaphor? " A beautiful woman, but full of tricks were louder "Rose" because roses. Despite the shape beautiful exterior, including scent inviting smell, but it has thorns. If not careful, may be cut easily.