To take a shower directly after taking a dump; originates from the combination of "poop" and "shower," where the spelling of "shower" has been altered to "showa" for a creative effect.
After I finish having breakfast, I will poopowa then get ready for the day.
The act of a thread getting closed in a forum soon after its creation due to it's subject restating a question/issue that has been discussed to death and back already, usually closed/locked by a person named Polygon
"Wow this is only the 100th thread about the rifle bug, hope it gets Polyowned soon"