only noticable now
You know, if some thin-skinned, offense-excuse-seeking little dimwits didn't get their generic-undergarments all in a bunch, most of us wouldn't even take the "offensive" meanings of these terms. Now that they've brought it up, NOW is when we'll start thinking of those heretofore-forgotten meanings. Sheer brilliance (not!!!).
Oh, sorry, can't use the term "dimwit"; "dim" might be offensive to under-powered light bulbs.