Embarrassment in a dream usually centers on social fear -- a moment where you're seen doing or being something you'd rather have kept private, in front of people whose judgment matters to you. It often surfaces around real self-consciousness, a worry about how you're perceived that's bigger than the specific scenario in the dream itself.
Mercury conflicts with those who are ruled by Jupiter, and Jupiter conflicts with those ruled by Mercury. - Picatrix (Andalusia, ~1000.AD)