When you don't see someone after getting a new girlfriend because they are almost constantly having sex.
"Man, I haven't seen Tim in a while..."
"Yeah, he got a new girlfriend; he turned into a real Poon Hermit."
Verb for the word Hermit,
The act of being alone, with no social life and being married to either YouTube, league of legends or other computer entertainment
This girl is hermitting today because of the weather.