"I've found you never can tell with some people and it's safest not to assume anything." He chuckled before he raised an eyebrow at Craig. "Well that's true, I can't think of anyone who doesn't like a bit of stroking."
He chuckled and shook his head. "I don't know, if you keep calling me Siri I might end up confusing you with my lovely cousin - and that would be awkward." He chuckled. "So really it's just safest if you stop that all together, after all I am the only Sirius around these days, so I think you're safe." Though he doubted his logical explanation as to why Craig should stop using his nickname would do any good - likely it would do the opposite.
He smirked. "Oh yes? I can't imagine why anyone would be scared to use your patented Craig-Logic."