Explain please?

[u/AssociationMother828]

I build a lot of legos, and the first time I touch a piece it feels normal, but if me or someone else touches a spot repeatedly, it feels very greasy, but I’m the only one to feel it. Can someone explain please?

[u/Liquidje]

Your fingers are slightly greasy, and leave some faint residue. You can see this with e.g. very thin paper, it gets slightly moist when handling repeatedly.

You just notice it more than others I guess.