Okay, perhaps I was insufficiently blunt. That wasn't an apology but an expression along the lines of 'Oh, that's too bad'. Carrie Anne, I wrote a content warning into the description of the video. If your son heard the F-word as a result of watching the video, that's your fault, not mine.
@Carrie Anne. Sorry about your son, but due to the content warning, you can't say that you weren't warned ahead of time.