I 'could have sworn' that I left my keys on the counter. [=I'm very surprised that my keys are not on the counter because I definitely remember putting them there]
The new president will 'be sworn in' tomorrow.
Witnesses 'are sworn' to tell the truth.
(..) everything you ever said and did on the Internet, even before you were together. Well, Heidi actually doesn't use the Internet. We've sworn off that stuff, so it's cool. Right. But somebody like me could look up your entire Internet history, print it out, and give it to Heidi. (..)2016 TvShow: South Park Title: Fort Collins Season: 20 Episode 6