Came from the theme song of the TV show “It’s About Time”.
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That showed aired on CBS. We only had snowy reception for two channels - 7 and 10(NBC) - and that worsened, depending on the weather or when a vehicle went by.
Did you also tap the person’s outstretched arm toward you on the wrist, midarm, then shoulder as each word was spoken until the last word you tapped/smacked/slapped the face?