There was a user on Lifehacks that just went about posting a litany of low-quality non-answers, the kind of stuff that should deserve the "offensive" flag.*
I flagged a couple of them as "offensive," but then realized that my flags might be better spent flagging one of the posts and describing the users entire behavior, hopefully catching the attention of SE staff (no mods on LH, yet).
I was a little confused when I was unable to flag an answer I had previously flagged as "offensive" because "You have already flagged this post for moderator attention."
So I guess this is kinda a feature-request; please let us raise (cast? throw?) a custom flag even after an "offensive" flag has been raised, so that an abusive user like this one can be pointed out to moderators through flags, as has been recommended in several MSE posts.
* E.g., as an answer to How to get out of the public restroom with clean hands?, that user posted
do not touch anything. it's so simple [censored]