Turkle explained

[mykidsmum]

LOL, I think I know why MJ gave Karen the nick name Turkle... First, I love Karen, No disrespect intended.  You know how we age, our necks sort of get that thing, and we call it turkey neck...well Karen, in looking at pictures of her, seems to love the turtle necks as she got older and it seems she was insecure about her neck... I'm sure MJ thought it funny and combined the two names and called her Turkle:)  Like "why ya always wearing Turtle necks?"  Karen- "to hide my turkey neck you goon" MJ- "don't be so silly, you don't have a turkey neck...you're beautiful...TURKLE!"

I love the name!

[voiceforthesilent]

If that is the correct explanation it's very endearing. I personally hadn't heard of the nickname but I don't follow Karen. It does make sense that Michael had nicknames for everyone he seemed close to. Blessings

[Sangre]

Makes sense though I believe it's more personal than that. An inside joke maybe.