[Half an hour later]
[A folded-over sheet of white typing paper is delivered to him, as well as a small sandwich bag containing five homemade cookies that have, of course, been examined by orderlies before handed over to The Joker]
My apologies for the oversight. I certainly didn't mean to offend, and in the future of course will be sure to include you when planning my gift-giving. I'll do my best to stop by and introduce myself in person tomorrow, say just after lunchtime? In the meantime, please accept my humble 'I'm sorry!' and these cookies.