Oh! And another thing — Bobby did a song that had to do with getting jammed in some way by his girl, and he gets down on his knees, and does this funny speech. (reminded me a little of John Belushi and Carrie Fisher in the Blues Brothers.)
Does anyone have any idea what I’m talking about? Thanks!
Could it be…(Turn On Your) Lovelight? (blind link - YT blocked @ work)
Good guess; but that’s not it. I believe there was a mother-in-law involved. It was a very funny song. I’m pretty sure the speech starts with, “Baaaaaaaaaby!”
BTW, I love your screen name, Mixolydian. It’s one of my favorite musical modes; not only that, but I also seem to have it permanently cross-referenced in my highly eccentric brain files to “Mister Mxyzptlk.” 
(And, it’s not “Mother In Law Blues.”)