Unfortantly i laugh at everything and anything.
But i remember one time when i was doing my dissertation in uni and he was reading through it and picked out a quote that sayd,
He read the qoute and started talking about it, and i was trying so hard not to laugh, when we finished i ended up laughing all the way home and for about an hr non stop after that. I have no idea cause its not even that funny, im just strange like that :P