Feels similar to a large base-tube when it is cranked. May or may not exhibit an odour.
This is often confused with minor earth tremors and after-shocks.
Bean Eating Dude: What was what?
Hot Woman: I heard a loud crackling thunder and the ground shook through my ass.
Bean Eating Dude: O' that was just me shaking the basement a little.
Hot Woman: You're disgusting.
Bean Eating Dude: I should change my underwear.