Anyone who has spent time bridge watchkeeping at sea east of the Suez Canal will be aware of what's known as the "Filipino Monkey" phenomenon. All ships at sea are required to maintain a listening watch on VHF marine channel 16, so as to hear distress messages, collision warnings or other calls. It's the equivalent of the Star Trek "hailing frequencies", as it were. However, you aren't supposed to just blot out channel 16 with chitchat - if you want to hold a conversation or something the correct form is to change channels after establishing comms on 16. In that way, the primary channel stays open for urgent stuff.
In northern waters, this is what happens. Once you get down into points south and east, the knowledge that large numbers of people absolutely have to listen to you - like it or not, as a requirement of maritime law and professional seamanship - seemingly becomes an irresistible temptation for a lot of people in possession of VHF sets.
The most popular phrase used by these people is "Filipino Monkey", said by salty old seafarers to have started out as an insult against Filipinos but now just meaning "I'm bored and want to piss a lot of watchstanders off".
At other times, people will offer karaoke-style musical offerings, brilliant gambits such as "I f*ck your mother/sister/dog", "look out I am going to hit
you, ha ha" etc. In many ways it's a lot like the internet, but sadly you can't - as a professional seaman - turn it off.
http://www.theregister.co.uk/2008/01/11/us_iran_navy_speedboat_row_filipino_monkey/