The Pred twitchiness seems to come and go with me. I was ready to bite my dad's head off in the car on the way to the supermarket today, although I bit my tongue instead. To be fair, though, it's hard to tell what is the effect of the Pred or what is simply my own natural irritability <_<. I do like the extra energy that I get from a high dose of Pred, however. It's subtle rather than blatant, but it does mean I can do stuff like post on forums again (lucky HW :p)
What did your dad do?