A little off-topic, but what the heck:
We put anti-seize on spark plug threads in airplane engines. When I was a snot-nosed newbie, I thought that, if a little anti-seize was good, more was better. I was globbing it on the threads one day and the shop boss saw me. Turns out that if you use too much anti-seize on the threads, it can get on the electrodes and the plug won't fire.
The boss told me, "When putting anti-seize on spark plug threads, a little dab'll do ya." The advertising slogan of a hair product (I forget the brand) at that time.
I never forgot that.