S7E15: Fry and Leela's Big Fling
DR. BANJO: Ah! Yes, our famous Human Habitat.
This pair have been our most popular specimens yet.
Especially the male.
I've never seen one have so much trouble with zippers.
As fun as it is to watch Fry try and operate his pants,
you can't keep him and Leela here against their will.
Against their will?
My good robot, they paid to be here.