Don't know if this is just in my area, but on a lot of the boards, there's always a couple of arseholes commenting on any questions on facebook noticeboards
eg
Does anyone know who the blue car on X road belongs to, as the alarm keeps going off
idiot 1 - "oh that belongs to idiot 2"
idiot 2 - "Nah, not mine mate that belongs to idiot 3"
idiot 3 - "yeah that's mine, i use it to pull the birds"
or similar, do they really think they are so funny??