Our universe is in a molecule in a drop of water which is in a glass about to be drank by person who, in turn, lives in a universe that is in a drop of water which is in a glass about to be drank by person who, in turn, lives in a universe that is in a drop of water which is in a glass about to be drank by person who, in turn, lives in a universe that is in a drop of water...
Animal House 1978 one tiny little Atom under your fingernail
https://www.youtube.com/watch?v=JUOGxePBs50