Not quite sure, I always use urbandictionary.com for that sort of thing though, lol. ;D
ewh! I think they are disgusting...they are those huge round ...no that's a turn off I think :D
The term pepperoni nipples is actually more appropriate when it comes to guys, because the average nipple size of girls are pretty much the size of a pepperoni, anything bigger than pepperoni size on a woman is considered gross, at least in my opinion and my friends opinion. So anything bigger than pepperoni = gross. If guys have pepperoni sized nipples it's called pepperoni nipples, because a pepperoni size on a guy is very big. I don't have it myself nor am I a girl so I can't tell wether or not is looks good but I assume it looks pretty gross on guys too xD.
Too big nipples in general isn't very attractive I'd say...
I think that just means you have big areolas. I wouldn't necessarily call it a turn because sometimes girls with really nice boobs and bodies have them, it's not something you can control.
I think its when the dark circle around your nipple is several inches in diameter, but I'm not sure. do a google image search.