I don't really understand why people get so het up about 'troll' threads which are funny and harmless. Obviously it's different if it's a troll thread pretending to be something serious or upsetting.
Neither do I. Take the Balonz one, for example – it was a strung-out joke, but a brilliant one. Gave us all a really good laugh I have returned and reread a few times and hurt nobody.
There was a farting thread a few months back that had tears running down my face. Farting is funny as but some people on there were posting with cats arse faces as they were not amused and finding farting funny is rather childish
Oh yes, the people who for some bizarre reason don’t find farting in the least bit amusing, but nevertheless still see a thread that’s clearly about how funny farting is and think “Yep, that’s the thread for me!” In fact, anybody who takes the trouble to click on any thread and then compose and post a pithy message saying “Who on earth could care less about this?” YOU, obviously!
There was one where there was a typo in the first post so it made no sense and it wasn't obvious what it was meant to be. . There followed pages of mornington crescent type posts discussing perfectly seriously something that noone knew what they were actually talking about. OP came back hours later to a thread full of nonsense.
Please show a little more respect for those of us preparing to celebrate te noihydc again next month 
www.mumsnet.com/Talk/am_i_being_unreasonable/3143672-TO-not-go-on-family-weekend-away
People having sex in the hedge was a brilliant thread
I remember people asking if the OP was sure it wasn’t just hedgehogs or foxes and OP wearily replied “I’ve never heard a hedgehog moaning ‘stick a finger up me bumhole, love!’“ or something similar 