Even if you've said it before...
...that doesn't make "fuck off" an intellectually cogent argument.
How about, oh, I don't know, how about just admitting that you over-reacted and unfortunately behaved like an arsehole for a while (as we all are wont to do sometimes), and saying something like "Sorry, I over-reacted and behaved like an arsehole."?
Dunno if you've grokked it yet, but that actually makes you look like *less* of an arsehole than yelling "No, I've never behaved like an arsehole in my life!". (Most of us know that everybody has, you see. (Because we remember that we have.))
