I personally think the best way to use humor or express emotions/feelings (works on other sites) is to use emoticons to express your feelings.
ie allright Dragonpop. quit hitting on the new girl, this is not Match.com ;)
would add a "finger shaking one after dragonpop" or maybe
All right dragon pop [snickers and waves finger] now, now, quit hitting on the new girl, this is not match.com ;)
So many different ways adding j/k could work, I like using emoticons
I know this site lacks them, and I say make a thread in admin area, I can think of at least 5 that need to be standard
And I have also decided at times to just not make the joke....the above I would of done tho'
That last sentence could be taken as smartazznis adding a grin takes some weight off it though