Purposely getting lost while hiking in hopes of finding hidden treasures. Often confused with "finding bigfoot", in which case you are attempting to find bigfoot, ultimately getting lost in the process.
When you are making coffee in a coffee maker and you lift the pot out carefully as you tilt your own cup into the stream of coffee. Taken from the opening scene of "Raiders of the Lost Ark" (1981) when Harrison Ford's character fills a bag with sand to steal a booby-trapped idol.
Me: I was Indiana Jonesing the coffee in the breakroom this morning!
My Secretary: Yeah, you made an awful mess! (hands me a paper towel)