I debunked several here too...

AF won't return whilst bfing
Can't fall pg whilst bfing
You lose weight from bfing (I'm bigger than ever and only stopped bfing DS about 3months ago, so fed him for almost 2yrs without dropping a kg! In fact I gain a fair bit and found it so difficult to lose)
Can't bf whilst pg (I fell pg when DS was 19mths old and he self weaned at just under 23mths)
BM alone isn't enough for big babies (DS was 4.2kg's when born and was exclusively bf until he was 6 1/2mths old. By that time he was about 8kg!!)