I’m actually nowhere near that bad…so far as you know.

Step 1: Ascertain the object of his aggression
Is he mad at you? Test this by taking one step forward. If he becomes noticeably more aggressive, step back. If this produces no reaction at all, say something flippant and sarcastic. If he smiles, you’re safe. If he growls, move to step #2.

Step 2 (Female): Act Cute and Helpless
Graemes are well known for being weak against puppy dog eyes. Attempt to exploit this. If he’s never had any feelings for you at all, or you have severely mistreated him many times, this might not be too effective. However, for most others he should crumble nigh instantly. Unless of course you’ve done something really, horribly wrong. In this case, move to step #3.

Step 2 (Male): Flee
You’re screwed at this point. Just run and hope whatever he’s holding is too heavy to be properly thrown.

Step 3: Apology
Apologize immediately for what you have done. In this step, it’s important that you admit what’s happened without silly games, and also act sincere. Provided that you haven’t exploited this option more than twice before, he should step down and be normal again. If not, proceed to step 4.

Step 4: Quote Him
Try to repeat something empathic that Graeme said during a happier moment. Hopefully something about his character. He’s probably more than prepared to counter its application to this situation by this point, but it’s all you’ve got left.

Step 5: Flee
See “Step 2 (Male)”