I emailed one of DS's teachers as he'd posted about students keeping in touch and so I thought he might not mind me asking if it would be useful if I bought DS the exam board study guide to support the teaching that he was putting in place. I apologised for emailing him at a weekend and say please do feel free to ignore this until Monday when I meant to put 'a week day' instead of Monday.
Do you think I'll have offended him by being presumptous that he'd reply on Monday - I didn't mean it!