CIMG4585 P heats a beer can to make it implode
P performs an experiment of crushing a beer can by exposing it to temperature difference. He heats the can over a stove, causing the air inside it to heat up, then dips the can in a bowl of cold water. As the air inside shrinks, the can instantly implodes.
He starts out by heating an upside-down beer can on the stove. The can is empty except for a few drops of water, since he washed it out before heating. In the video, P speculates whether the presence of the small amount of water in the can makes a difference (when heated, it turns into steam). At some point he plans to perform another experiment with a completely dry can and compare the results.