Harvey is definitely a boy and definitely has nipples, I was tickling his belly when I first found one, thought it was dirt on his skin/in his fur and tried to gentle ease it out with my finger nails
unfortunately no matter how gentle you are, trying to pull a bunny's nipple off is a bit of a shock for the poor thing
(don't worry there was no nipple damage, I was being very gentle even though I thought it was dirt, and he came straight back for nose rubs after he got over the confusion
)