I swear to Darwin on a Stack of Gods
when someone who doesn't believe in anything at all promises the truth with so much swearing that even Darwin would be proud, and the gods would probably back them up.
I swear to Darwin on a Stack of Gods, I didn't take your controller.
I swear to Darwin on a Stack of Gods, I didn't tell the teacher about the snack.
I swear to Darwin on a Stack of Gods, I didn't leave your room a mess.