RiffMeter (91 votes)
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.
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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.