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Know For Sure

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You think you don't have syphilis, but how do really know? Has anyone you trust told you you don't have it? Have you been in contact with anyone from a big city in, say, the last year? Then you almost certainly have it! Talk to your doctor immediately, or at the very least, a silver-haired white guy with an authoritative voice. He will put your shame under a microscope and make you look at it and if that doesn't change your ways, than I don't know what!

Or you can just watch RiffTrax latest hilarious short subject Know For Sure.

Digital Video file formats

Source Audio (mp3) (13.46 MB)
High Quality (MPEG-2) (404.1 MB)
DivX (91.64 MB)
iPod (mp4) (105.69 MB)
Zune (Windows Media) (101.25 MB)

All digital products you purchase from are DRM-free, can be played across a large variety of devices, and are yours to keep ... forever! Even if you have a hard drive meltdown, you can always log back into the site and re-download all of your previous purchases.

For our Download and Stream products, you can stream the product to your computer or to your TV via Chromecast, or download to a device that can play the MP4 file format. For more information on our video formats, please see this KB article.

Just the Jokes are simply MP3 files which are DRM free and can be enjoyed on any device that can play this common audio format.

RiffMeter rating

Average: 9.2 (159 votes)

Content Rating


Release date

November 20, 2008


14 minutes