I think of my self as the kind of guy who can be nice and helpful or be a total hard ass if I want to and when I found this little pic, to me it screamed "If you do something stupid I will tear you a new ass hole!" which as some people have seen can be true of me. As for the can be nice bit, well I suppose it doesn't do much for that. I suppose that it keeps people on their toes to be mature and it's a surprise when I actually help out.
The way I found this was when I was nearing the end of my first and so far only Keller sentence, I wanted to get away from the baby pick ASAP so I went looking for avatars. I'm a big fan of HALO so I searched around there first and came up with this gem!