1. I know you're busy, but... (I could really use some clean clothes; could you wash my car for me; would you mind doing some brain surgery really quick, etc.)
Means, "You totally don't have time to do this, but because I used this as a preface for my sentence, you'll drop what I'm doing and help me!" =D
2. I'd love to help you, but... (I'm in the middle of doing laundry; my homework's not done; my little brother's playing with a nuclear missile and I can't leave him alone, etc.)
Means, "I'm trying to get out of this and sound helpful at the same time and possibly succeeding but likely (depending on how legit the excuse sounds) failing miserably."
3. No offense, but... (your hair looks like a dead porcupine; this banana is more intelligent than you, etc.)
Means, "I'm totally about to offend you, but because I used this as a preface for my sentence, it's not offensive to you in any way!"
...
...I know there were more sentences like that, but they ran away....
D=
Drat you, stupid blog idea... first you inspire me, then you run away and leave me with half a blog entry!? TRAAAITOR.
Turakii