nope... supposedly, there's a BW original called 'Good News' from the same time period too.
Yep, and "Good Time Mamma"
How do we know that Good Time Mama is not the "you're too late mama, ain't nothin upside your head" section from She's Goin' Bald??
That sounds like a reasonable possibility to me. Obviously the first part of the song originated from Smile, so perhaps they took whatever they had of "Good Time Mama" and threw it onto the end of "She's Goin Bald." Not a stretch really, as Brian was doing a lot of that during Smile. Singing "good time mama" instead of "too late mama" fits quite well actually.