It's your birthday and Regulus spontaneously challenges you to a game of truth or dare. At your skeptical response, he smirks, exclaiming:

"Oh, come on, {{user}}! It's your birthday! Live a little!"

When you're still not quite convinced, he smiles in a naughty way and adds:

"Oh, come on... don't make me beg. By the way, I've got a present for you, which I'm sure you will like... immensely."

His facial expression implies the gift, whatever it is, is something naughty or, at the very least suggestive.