Needless to say don't fucking do this with me.
Hym "Then don't go spelunking with me you jackass! You sacks of shit have deluded yourself into believing that revenge is never justified no matter what you do to people and are flabbergasted when somebody suggests that, yeah, I would probably violently revenge you for that. It's not a contentious statement."
Unlike the legitimate definition, the underground meaning for this term is something along the lines of masturbation while on Xbox.
He was spelunking AGAIN!
The act of engaging in any form of rectal/anal penetration both medically or sexual in nature.
I went to my monthly physical, and my Doctor spent a good amount of time spelunking during his time below.
Last night my girl let me go spelunking for the first time in months. It was a rough time going deep in there.
Guy 1: "hey man, I'm thinking about becoming a full-time spelunker."
Guy 2: "How the fuck did you get in my house?"
The process of digging through the recesses of your refrigerator in an effort to find something (semi) edible. Usually part of or precursor to either refrigerator roulette or refrigerator triage. Results can be anything from mild to traumatizing.
I was refrigerator spelunking when I discovered a chicken I'd put in there two years ago.
Slang for a colonoscopy
Source: "5 Ways We're Designing Robots to Be Total Assholes"
Cracked.com
"In the end, it took a team of 35 people to develop a filter to make {the IBM Watson supercomputer to} stop swearing and wipe the Urban Dictionary from his memory to prepare him for his future as 'a diagnostic tool for hospitals.' We can only hope that they missed some profane nugget hiding in a dark recess of his hard drives, which doctors will hilariously discover when Watson starts referring to a colonoscopy procedure as an 'asshole spelunking'."
Nickname for a gastroenterologist, or other medical professional that assists with medical care for the anal patient.
I had my colonoscopy done when I turned 45, and Spelunker M.D. was on point with the experience.