On golly is basically means you mean it but you don’t really mean it at the same time
Person 1: I sucked your dads toes last night
Person 2:on golly!
the new version of on god, curated by steve.
Dave: my parents hit me.
Sarah: On golly mine do too
term used to confirm the seriousness or accuracy of what was just said, like "on my mama.'
wait you really just won the lottery? "on golly"