Blaze is probably one of those dumb kids who says something like
Me: Goodbye, fatass!
,
runs away before they can respond, then goes "trolololololololololololololo
lol" snickering to himself and then spends the next hour full of pride due to his "amazing trolling skills" and how he is "such a funny troll and so cool" on the internet, then going to play some crappy games like TF2 and post crap like this, as well as "cool" tf2 videos, in off topic.
Edit: What's with all these dumb ideas of deciding to prank random old people. Badspot's mailbags are always full of kids wanting to send "lul" emails to the person in OP.