It happens to me at my local book store, almost every time I go; heavy books geisting right of the shelf. Sometimes the shelves themselves rattle too. I always wonder what witnesses think about it exactly, even though I can tell they know it's coming from me:)
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"Worry about self delusion, after you have succeeded." -Owltwelve
I know! I geisted the ipod the was behind a glass case once. This lady and I were both looking in the case, and I put my hand up to the glass and it flipped off of it's stand. She looked at my like I was insane and I took off. lol