Okay, maybe fun isn't the right word. Maybe obsessive-compulsive tics. This is how I feel sometimes about Ed's little alliteration game from the other day...amusing, enjoyable, insidious, malevolent.
Back when Rhian and I were about to welcome our first kid, we got into this weird habit. I guess she had mentioned to me once that Canadians pronounce the letter "h" differently from Americans--they say "haitch," not "aitch." (Canadians: true?) In any event, we promptly began tacking the letter "h" onto the front end of any word that began with a vowel, giving us "honions," "heggs," "you're a hasshole," etc.
When Owen was born, we quickly began calling him "O," which was immediately upgraded, thanks to Canada, "Ho," and from there, the wildly inappropriate "Ho Chi Minh." That was too long, so we shortened it to "Chi-Minh," which was shortened further still to "Cheem." For a long time, the baby was referred to as "Cheem." (I could spring from here to a discussion of pet names, but I'd rather stay married. You know what I'm talking about, though.)
We also went through a period of softening consonants (for instance, "p" became "b"; "t" became "d"), and then one of hardening them; and then we started doing both at once, so that "birds" became "pirts," a "backpack" turned into a "pagbag." We got over that one, eventually, but a few words have remained in the lexicon, as have a few artifacts of particular funny regional or international accents we've indulged over the years, or exaggerated parodies of people we've encountered.
I don't believe there's anything especially unusual or writery about any of this, though I assume we indulge it with a little extra elan, and get perhaps a little extra delight out of it, compared to your normal citizen. But ultimately, these games are, I would bet, common to most people, especially couples, who can evolve in-jokes with blinding speed. Examples abound: Cockney rhyming slang...baby talk...LOLcat speech. (I knew we were in a new kind of era when I heard my department chair exclaim delightedly, during a VIP dinner, "I can has cheezburger!")
If you have any personal language amusements you'd like to torture us with, by all means, spill 'em. Or, should I say, zbill 'em.