The process of pooping on a girl's back, more towards the shoulder blades, and then pissing it down towards her ass. Resembles a log flume ride.
Keith: Yo, i just log flumed this girl last night.
Dan: o yeah, howd it go?
Keith: She loves that shit.
Dan: o yeah, howd it go?
Keith: She loves that shit.
by Shotty December 4, 2007
Similar to an upper decker, however the turd is taken in the upper tank of a gravity fed toilet (those which the tank is suspended 6ft up). When flushed the turd is sent flying down the pipe fed by gravity and makes a large splash similar to that of a log flume ride.
by Josh Bird September 9, 2006
The log flume is when you take a dump on someone's chest, and urinate on the chest shortly after. As you urinate the excrement will slide down the chest and stomach the same way a log would.
by CFP February 23, 2006
A term often used in software development, when the technical team are trying to troubleshoot a customer problem. This term usually suggests that the technical team is constantly asking the customer for log files.
Manager: Did you manage to troubleshoot the issues that Technico had?
Neils: Not yet, I've taken them for a ride on the log flume until I can figure it out
Neils: Not yet, I've taken them for a ride on the log flume until I can figure it out
by neilsonz January 20, 2009
To have a bowel movement in a bathtub.
Great day - parade, festival, funnel cakes, shopping.... and then the baby log flumed in the tub...and one of her sisters was in there too!
by Matt Lispen October 17, 2010
The Reverse Log Flume is when A girl is balanced on her shoulders and upper back with her legs bent towards her face. A guy is fucking her in the ass while she is shitting and pissing on her own face. The Reverse Log means the girl is geting fucked in the ass because a log (or shit) comes out of the ass, but since the guy is fucking her in the ass its going back in, hense Reverse Log. The flume part actually goes with Log Flume or an amusement park ride in which you get splashed with water in your face at the end. Hense the pissing in her own face part.
Mike - Hey Susie did you finish your chili yet?
Susie- Yes Mike are you going to Reverse Log flume my turtle heading asshole?
Susie- Yes Mike are you going to Reverse Log flume my turtle heading asshole?
by Elohdaeh May 22, 2008
Last night, Bill picked up that Latvian waitress with the beard and totally Amish log flumed that hairy bitch.
by Mark W. Howell, Esq. September 8, 2009