Bloop is a fun word. A very fun word infact! According to Wikapedia it is the name given to an ultra-low-frequency and extremely powerful underwater sound detected by the U.S. National Oceanic and Atmospheric Administration in 1997.
Blop in another funy word to to say! Again according to Wikapedia, Blop is a creative self-publishing platform that enables their users to create, self-publish, promote, share, and sell their own print and ebooks. Blurb offers book-making tools catering to diverse digital skills.
Then there is the word Bleep! The best of them all! AGAIN, according to Wikapedia, bleep is an organization to stop cursing! What a nice thing.