Top Definition
A word we use to threaten our kids instead of saying "Do you want a spanking?" Will stop all bad behavior immediately. Trust. Also works with some adults.

Credit to my neighbor Becca H.
"Stop crying or I'll give you a smack diddly donk!"

Lisa had second thoughts about snooping in her brother's room...what if he gave her a smack diddly donk? That would hurt! Wouldn't it?
by Momma Betsy February 03, 2008
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