I suspected it for a long time but was only recently informed that the phrase is more widely known as "une petite mort" or "la petite mort". Yes, my heart sunk a little. I take comfort in two things:
1. It is just a gender preposition, the idea is the same.
2. Doesn't mean I'm wrong.
But shit. I knew I should have gone with the feminine preposition.
And just for the sake it it. I love this photo.
'Before the Fall' by Alejandra Laviada.