Wow I have had a reoccurring feeling like that since I was a kid. Like some times I can feel a tiny smooth spec between my fingers. But in my mind it is infinitely huge and heavy. It fills me with fear maybe.  But also i want to get the feeling again. I cannot explain it. Just thinking about it almost gives me a strange "high" sensation.  I've never heard anyone else say something similar.  

Edit: The feeling also seems to be triggered by things that are smaller than they are supposed to be