look up any word, like fapchat:

1 definition by Shotty

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.
by Shotty December 04, 2007