You don’t need to wish me a happy birthday, William, but thank you. That’s very sweet.
Well it was your birthday, I feel like I should do something. Maybe sing the ‘he’s a jolly good fellow’ song. Edited to be more gender correct, of course.

Yes, it’ll be like having my own private concert hall. I feel sorry for the bar soap who has to step in as my personal...
Well, sing more often! Try it in the shower, there’s nobody to judge you there—plus bathroom acoustics are the best.
I just wanted you to feel special on your birthday.
I— really? -grins- Well, how could I forget the birthday of my, um, favorite cousin, huh? Er… disregarding the fact that...