Fortunately Jamie doesn't catch that slip of Buffy's - or if he did, he's assuming it's just part of her normal way of speaking. "Aye, and I'm sure there's other things that other people can deal with, like computer germs and such." He means viruses, not germs. He's at least a little familiar with computers, but misses some of the terminology. Speaking of which, though...

"Ye should get one of those wee bitty computers, er, Omnicoms. They're verra handy to have."