When you take a big shit and you clog up the toilet.
After not taking a shit for a couple days, i caused a log jammer in one of the toilets at school.
by Byerly May 20, 2005
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a term usually used to desribe a gay man, though exceptions can be made. It refers to the act of anal intercourse.
Those two men yonder are log jammers.
by clair3000 October 20, 2006
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When one shits into anothers asshole, and the same shit is returned to the owners asshole. The shit is passed back and forth between assholes... Much like a sort of "hot potato" game.
James and Eddie did the Log Jammer! I walked in and saw them!!
by MorgazmHAH December 6, 2007
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when you poop in someones mouth then make them give you head.
i hate that bitch i want to give her a log jammer.
by matt krizzle February 3, 2004
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When a girl is about to take a shit and you stick your penis inside her ass before she takes a shit.
Bro:Aye how did it go with Melissa last night?
Guy:We tried doing the Log Jammer
Bro:Did it work?
Guy:You want to smell my dick?
by colla93 May 31, 2011
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It's a water-ride at Magic Mountain in Valencia, CA.
Johnny: Hey Bobby, this heat is killing me... after the girls get out of the restroom let's go on the Log Jammer.

Bobby: No way Johnny, let's take 'em on Jet Stream. It has a tunnel which is a perfect place to grope their boobies.

Johnny: Good call.
by Stickyrikky July 14, 2009
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When doing a girl from behind while she is hand-cuffed to the toliet Boondock Saints style, you shove your cock in her ass, dunk her head in the toliet and give her a swirly.
So I gave Heather a ride on the Log Jammer last week, she hasn't talked to me in since.
by Christifori July 16, 2008
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