firstly, I don’t think it’s a leaf but a petal. That should be a fact.
Whether it looks like tears or pearls or fond memories or blood drops is absolutely imaginative symbolism – relative from one person to another. I am sure there’d be lots of people in the world who’d consider it as erotic.
I deliberately said this because this is not a slang or any such thing yet I know it’s not nice to blurt out whatever comes to your mind. I would have rather cautiously chosen something like “sensual” but just to make a point that beating drums for slangs to “affect our lives” is arguably futile.

yeah, thanks for notifying it really is a petal not a leaf …!

Shabnam ke qatre…

To quote from Ghalib again:

Partav-e-khur se hai shabnam ko fana’a ki taaleem
MaiN bhi hooN ik inaayat ki nazar hone tak