How do I post comments to other's answers while posting an answer?

Question

(some are funny, some are rude, but when I read others answers, I'd like to post them a short comment or "lol" -not just give a thumbs up/thumbs down.

Answer 1

I usually just include the comment in my answer.  If they are too rude, I do report them. (I haven't done that a lot)

Answer 2

The safest way to do it is check to see if they have IM or e-mail contact enabled on their profile page and send it through there.

Posting it in one of your answers puts you at risk of getting a violation notice for personal communication.