How to find tdc

so I bet..... pulling #1 plug, me putting my tongue over that hole, having the wife rotate the engine over till I scream, is just a redneck method!!?? ha ( she is supposed to stop when I scream right!! ??)
sorry for being a smart ***

an enterprising young soul could make these stops otta these old plugs, and sell them on here and help with their resto $$ ! ??? I bet