A BBCi article compares the experience of Halo LANfesting with watching porn as part of an examination of how popular Halo still is years after its initial release. But don't worry, it's a compliment:

But there is something genuinely special about a gathering for some offline multiplay, replete with booze, snacks and stream of banter, by turns good-natured, competitive, foul and surprisingly witty.

Sounds like he was at Louis Wu's last LANfest.