I feed off of or mirror pretty much everything. If someone cries. I cry, if they laugh, I laugh, unfortunately, I don't have much control over it and have laughed at some very mean jokes in the past simply due to that reflex.
Whatever the "mood" of a crowded room is, I tend to have it in extreme. If people are excited, I am have my excitement plus the excitement I am mirroring. My emotions are stronger than other people's, which is often embarrassing.
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"Be kind to one another" -Ellen Degeneres