Neil Andrew Morris This one was a bit of a hint:

• do you know Bon Iver?
• do you know what Bon Iver means though?

The music ones seem to be a giveaway, too. But you’re right , we don’t know anything for sure — and of course, even what “after sex” means is subjective. Somebody else pointed it out in the comments…it could mean anything from coitus to on the way out to even the following day.