I don't even know what "song dog", "speed goat", or "ditch donkey" are.
"The jab" originated as a term to use to use in lieu of "the shot", or "vaccine", etc. in order to try to get around the censor programming on facebook and other websites.
I will say that in general, modern slang and cutesy phrases irritate the living hell out of me.
A song dog is a coyote, a speed goat is a pronghorn. I've never heard of a ditch donkey.
βIn a time of deceit telling the truth is a revolutionary act.β β George Orwell
It's not over when you lose. It's over when you quit.