My friends from the hills say, ramp and rave. A ramp is something you climb on your way up into the boat. Mind you, one doesn't correct hillfolk on their terms. Incidentally, if you are in southern Ohio and they stick their noses in the air as you pass by, it would behoove you to know that that is non-verbal slang down there. I've never heard this term before, to be honest.
Boogers are something found in the nose.
So I would interpret boogered up as meaning stuffed up as in having a cold. Learning this pseudo-language is enough to get someone flustered. Or at least I would say I was flustered, or perhaps even frustrated. However, I have a couple friends who would say I was getting them very flustrated. Foreigners tell me English is a very difficult language to learn.