You said: "Should of asked the surgeon..."
Important point:
Typing as a Cumbrian, I understand exactly where the "of" in the above sentence comes from; this use reflecting a typically north country dialect.
I see the original poster avoided the more grammatically correct (at least as seen in a
BBC grammar frame-of-mind) "should've" which perhaps
should have been used in order to force the point: though the
pronounciation of what was said is that which we might well have spelled out as "should of", which naturally adds weight and gravitas to this blast of northern wit.
Specifically, there are two important points arising from this conundrum...
1/ The meaning was more than clear enough, so wake up to yourself, already.
2/ It's better than txt spk by 1000000 miles.
Andy. enjoying a use in the above of the much maligned and misused semi-colon. And am I the only person still to use the words "ironmonger" and "ought" - along with the particularly lovely "oughtn't've"? (Whose definition is no doubt defined by this post?)
Sorry to hear about the knackered finger, by the way!