To take a steel or other hard metal screw or bolt and cross thread it into a softer metal such a aluminum. Most often found after purchasing a used machine the first time you attemp to remove any bolt or scew.
I just bought this dirt bike for pretty cheap but I found out they applied "Perry County Loctite" to nearly every bolt on the machine.
Alternatively, "Boy will they be pissed when they find out I applied Perry County Loctite to that head bolt on that car before I sold it on Craigslist"!
A substitute method of keeping threaded fasteners from becoming loosened due to vibration, stress, etc. Instead of using conventional liquid {loctite}, one simply assembles the fastener using dissimilar thread combinations, i.e., a coarse thread on on a fine thread bolt.
Alternatively, if the threads match, grind or hammer the threads of the bolt slightly to induce the crossthreading principle.
A medical condition affecting the heart (not the one that pumps blood, the other one). The inflammatory reaction results in swelling, redness, warmth, and pleasure. There is no cure for it.