Though shalt not suddenly come up with a list of things you want for Christmas a week before said holiday, especially when I've been asking you for weeks what you wanted and just bought you something I thought you might like.
Especially when they're group presents that require the coordination of my two broke-ass sisters who most certainly have already also bought you presents.
ETA: Well, that first sentence up there is right confusing. All the 'you's and 'I's. Grammar people, explain why that reads so weird.