that reminds me of a joke.

A lab wants to make a human chimp hybrid,. they put an ad, listing 500$ for volunteers for an experiment.

100 volunteers come in, the scientists explains them they of they accept, they’ll have to have sex with a gorilla for 500$.

99 of the volunteers refuse immediately.

one accepts

on the day of the experiment the volunteer asks, those 500$ do I pay them now or after?