[And Jamie is going to frown right back.]

Aye, maybe so, but I'm telling ye, I know the difference.

[He launches into a long, complicated explanation of not only the differences between the two, but also how the twiddle is better utilized in certain circumstances - such as the one in which they find themselves.]

...so if ye tell me where you've gone and put the spare tube, we'll just see about getting that fixed, yes?