Heaviest liquid?

Could this be the heaviest room temperature liquid? Help me make videos by donating here: https://www.patreon.com/CodysLab

English

Originally Aired April 28, 2017
Runtime 2 minutes
Production Code vguX88R5WbY
Created September 22, 2020 by
Administrator admin
Modified September 22, 2020 by
Administrator admin