Sentence:  Indiana Jones was so-so. The walk through bush reminded me of tree humping (grrr). Didn't figure out the snake pit(due to lack of <WSD>wall humping</WSD> I hear), though it was obvious that was the point to work on. 
Meaning of the word marked with <WSD> tags:  (The act of a character) moving repeatedly against a wall, as if humping it, either intentionally (e.g. trying to find secret doors) or due to a glitch.