The HN discussion linked from my previous post includes a fairly extended set of comments on this exact issue.

My read is that "f-bomb" (and other -bomb terms) can be merely a case of being uncomfortable with swearing, but it is also used by people of various demographics to describe the conversational effects. I hope my use of terms like "f-grenade", "f-pepper" (which came from the previous article), and "f-spam" are likewise evocative.