I think this goes a step too far to be believable. Of course I can buy that you'd bite someone out of stress, and maybe a second time because you're hungry. At

I think this goes a step too far to be believable. Of course I can buy that you'd bite someone out of stress, and maybe a second time because you're hungry. At this point clearly the next step is building rapport through humour, and biting the interviewer is the logical step since that's what you have in common at this stage. And yeah I could get that the interviewer is agitated at this point, disregards your own character and preferences, and this triggers you. But clearly you'd call. Or go in person. Or even write a card. Not send an email.