This particular coincidence emanated from a post on the PowerPop blog. One of the blog's contributors, Steve
The post resulted in a few comments, the first of which was from Blue Ash Fan:
"Isn't that the chorus from FoW's "It Must Be Summer?" And, hell, even the verses employ the same motif. Or am I imagining things?"
A few other people mentioned the similarity, and then the embattled songwriter Dave Birk (hi, Dave!) left a comment stating in a heartfelt manner that the coincidence was entirely coincidental.
This is what got people going "Hey, that's...":
Dave Birk - "All Things Retro" (2012) (excerpt)
Fountains of Wayne - "It Must be Summer" (1999) (excerpt)
Here are the full versions:
Dave Birk - "All Things Retro" (2012)
Fountains of Wayne - "It Must be Summer" (1999)