when shopping one of my pet peeves is to be called pet names by a stranger behind the checkout counter.
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I'm right there with you, especially when the shop person is a male dealing with my car...
Back to your main question, I call my dad 'Pop' and my brother "Bubba". That's about all the pet names I use unless you count the cats. I refer to one as "mon petit chou chou" (no idea why I use that, but I like it)