Where does the term Waccy Baccy come from?

[Bretrick]

According to the Urban Dictionary; Latin "Waccius Baccius" meaning 'to get high and chill, man.
I only ever hear older people use the term.
My elderly female mother figure disapproved of my smoking pot and every time I visited her, the first thing out of her mouth was, "You been on the wakky baccy today"?

 

[Jazzy1]

AI overview:

"Wacky baccy" (often spelled wacky backy or wacky tobacky) is a slang term for marijuana that originated from a rhyming compound in the United States during the 1970s. It is a playful, euphemistic combination of "wacky" (meaning crazy or silly) and "tobacky" (an informal, regional term for tobacco).

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I, personally, have never heard of either slang term.

 

[Lewkat]

Refers to marijuana.

 

[jim_slim]

Never heard that term before……

 

[hearlady]

Sort of sounds like "Achy Breaky"
Oh, you mean "Wacky Tobacky"

 

[IrishEyes]

I have heard it, usually from people older than myself, same as you stated in OP.
I guess it was their way of being fictitious about it.

 

[That Lady in PA]

I am surprised no one mentioned this from 2017:
Toby Keith's single, "Wacky Tobaccy," brings with it a humorous music video featuring -- who else? -- Willie Nelson.