Shower power hour 

At a party when you steam the shower and or hotbox the bathroom strip to underwear and blast music

Let’s have a shower power hour and go nuts

Shower power hour by Ud rando June 7, 2023

Half hour shower of power. 

When you have a 30 minute shower, most likely it's not needed and you coulda made due with a 10 minuter.

person 1 - what the hell were you doing in there?
person 2 - It was my half hour shower of power.

Half hour shower of power. by Chayse81 November 13, 2012

hour shower of power 

Also known as an HSOP, this is a male's shower that takes an hour. Any male spending an hour in the shower is quite obviously masturbating in there.

Ben was an HSOP master, his hour shower of power happened twice daily.

hour shower of power by Downvoting Victim November 30, 2011