Speaking of

“Speaking of by the way: nice car. I mean that.”

No more songs. This is a restaurant, for Christ’s sake, and speaking of, can somebody tell me where the hell is that veal?

—[…] Speaking of by the way we should go shopping on Saturday or Sunday because Penney’s is having a sale at Fair Oaks.

“[…] And speaking of, can you please cover up that hideous shirt?”

A: I wish Maria had come. B: Speaking of! Here she is!