>I find no joy in saying it, but I bet that would get you some unwelcome attention - trademark infringement, defamation, tortious interference - from one of those companies. :(
While that's a wonderfully dystopian view, I'd expect that wouldn't happen unless you attempted to use such SSIDs in a commercial context.
for your "wager" to be successful, I should expect to be sued over saying stuff like "Old McDonald had a quarter pounder Henway" or "Starbuck made the same inferior coffee for Ahab every day."
I'll await cease and desist letters from McDonald's and Starbucks.
According to the U.S. Patent and Trademark Office[0]:
Trademark infringement is the unauthorized use of
a trademark or service mark on or in connection
with goods and/or services in a manner that is
likely to cause confusion, deception, or mistake
about the source of the goods and/or services.
Not sure how using a WiFi SSID or other statement that includes trademarked terms (especially those that have cultural roots separate from the trademarks) could be an infringement unless the source is actually selling or marketing a competing product.
[0] https://www.uspto.gov/page/about-trademark-infringement