I have seen this kind of thread on a bunch of different forums and have never seen it tried here. Usually called a "statement" or "word association" thread they can sometimes go on for months on a busy forum.
If you've never seen one the idea is simple. I start with a phrase or a name and you...
ditto post whore
gettin' yurr word on
notasexthread
padding postcount
post whore
shut your whore mouth
wanna make out
well hell yes!
whores
word up
yes!
zombiedingosateyourbaby