When a person acts as a struggling friend, but only has intentions to use you for what you can offer.
Man, I thought that dude was my friend. I spotted him $100 for the night, and he said he would pay me back. He since has ghosted me -- that dude has to be strip mining me.
When an inmate in a femaleprison wants to craft a new dildo out of prison materials to please their abusive (dominant) stud owner, so they need to find a penis to craft it with (analogous to diamonds in Minecraft strip mining due to its rarity)
Dominant stud owner: Do you have that new dildo I asked for?
Submissive female prisoner: Nah, I need to go strap mining for it.
The act of mining in a straightline in Minecraft. While usually done to find diamonds, it can also be used to find other ores (lapis lazuli, gold, redstone, etc). Stripmines usually start at the Y-coordinate level of 11, 12 or 13.
the act of purchasing a trial membership to a pornographic website, then downloading as much content as possible in that period of time before declining to renew your subscription
Dude, that site has some awesome sex videos on it. Let's go halfsies on a membership and do some stripmining!