The screen name "Chetchez" is derived from the words "Cheddar" and "Cheese". Way back in 1995, AOL only allowed screen names with eight alpha-numerics, Cheddar Cheese became abbreviated to Chetchez. At the time, the only other person who had AOL instant message was my Aunt. We had a running joke of answering the phone as a SNL character Emily Litella.

From Wikipedia:

"Emily Litella" was a fictional character played by comedian Gilda Radner on Saturday Night Live... Emily Litella was an elderly woman with a hearing problem seen on the op-ed Weekend Update... She would also refer to anchor Chevy Chase and Jane Curtin as "Cheddar Cheese" and "Bitch!". Other misunderstood topics included Saving Soviet Jewelry ("Jewry"), Endangered Feces, Making Puerto Rico a Steak, Presidential Erections, Pouring Money into Canker Research, the Eagle Rights Amendment, Busting School Children, Conserving our Natural Racehorses, and Sax and Violins on Television.