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1.
(Verb)
When you find yourself with someone who really enjoys shit in their ass (guy or girl) and you get some anal sex beads (kinda like a Mardi Gras neckless). After feeding in a good foot or more of the beads (with proper lubrication), it is the process of yanking the beads out like starting one of those stubborn fucking push-lawnmowers, it involves a lot of screaming, cussing, pain, blood, and SHIT.
Rip for the ripping motion of the beads, and the ripping of the asshole, and tide for the flood of blood and shit that comes out.
Damn, that must have hurt sooooo much when he riptided her ass! Way more than when he overboarded her!
by Brian H November 06, 2004
 
2.
Shortly after a male ejaculates, the male will feel that he will have a second wind and continue. Shortly after this, he ejaculates again in disappointment or disbelief.
Hey man I had the oddest sex session and my girlfriend broke up with me after I had a riptide on her pillow. Worst night I've had in awhile.
by The Royal Trout M.C. April 02, 2013