despite the word sounding and literally basically being the beginning of 'penis', this word has
nothing to do with your obscene love sword! Unless you wish to use it in modern day times, in which case it is indeed short for the word 'penis' and can be used as a fairly rude insult.
In reality, the word peen means the back of a hammer. You know, that one part of
the hammer that's round and at the back? Yes, that part. It's not a penis. stop
calling it that.
It's also called a ball-peen. It's still not a penis. Never will be. Unless your.... That guy.