The absence of the comma means Bert and Ernie are brothers and their mom is one of those ladies who married herself, which was a trend for a moment in like, the early 2000s or something.
There’s no place to grammatically put a comma for disambiguation, but if you switch around the subjects you can clear things up: Ernie’s mom and Burt Bert?
Bert and Ernie’s mom? Definitely.
The absence of the comma means Bert and Ernie are brothers and their mom is one of those ladies who married herself, which was a trend for a moment in like, the early 2000s or something.
There’s no place to grammatically put a comma for disambiguation, but if you switch around the subjects you can clear things up:
Ernie’s mom and
BurtBert?But now you’ve introduced a fourth person, Burt, distinct from Bert, which has made for a somewhat confusing orgy.
Damnit! How am I supposed to be a grammar snob if I can’t even spell his name right?
Hah, I definitely forgot about that trend, it was pretty short lived.