Oh, comma before “and” in a list
At you, some writers shake their fist
But thou deserve an appreciative golf clap.
Though use is completely optional
You’re useful in a grammar arsenal
For changing the meaning of a sentence in a snap.
Make this strange, two-person detour:
Doug found himself on a private jet with his father-in-law, a bike courier and a cat acupuncturist.
Into a madcap, four-person adventure:
Doug found himself on a private jet with his father-in-law, a bike courier, and a cat acupuncturist.
For such clarity, we hereby doff our caps.
Have a grammatically unambiguous weekend, everybody!
Your (honestly, we’ll use/not use whatever comma your brand standards require) friends at Brokaw