This week, we talk about the difference between "cannot," "can not," "can't," and (horrors!) "cant." Plus, in honor of Halloween, we reveal the origin of three idioms about death. FOLLOW GRAMMAR GIRL Twitter: http://twitter.com/grammargirl Facebook: http://facebook.com/grammargirl Pinterest: http://pinterest.com/realgrammargirl Instagram: http://instagram.com/thegrammargirl LinkedIn: https://www.linkedin.com/company/grammar-girl SPONSORS http://topcashback.com/grammar http://blinkist.com/grammar GRAMMAR POP Optimized for iPad: https://itunes.apple.com/us/app/grammar-pop-hd/id666851934?mt=8&ign-mpt=uo%3D4 For all iOS Devices: https://itunes.apple.com/us/app/grammar-pop-hd/id666851934?mt=8&ign-mpt=uo%3D4 GRAMMAR GIRL BOOKS http://www.quickanddirtytips.com/grammar-girl-book-page THE GRAMMAR DAILY 2018 CALENDAR http://amzn.to/2f8jPDG Grammar Girl is part of the Quick and Dirty Tips podcast network. Check out all the Quick and Dirty Tips shows: www.quickanddirtytips.com/podcasts Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.