Farouk, do you have a think with needle, piercing, ripping flesh, or all three? I'm trying to figure out this thread....I supposed I'll give you a couple answers.
Guns suck, they put the earing on too tight, so now you have to mess with it to get it comfortable....way less sanitary.
I have two holes in each ear. Right now the bottom is a 2 and the top is the normal earing size, but a decade ago the top was a 2 and the bottom was a 00, then I took the top out and went up to 5'8ths of an inch round hole. You can hardly tell, and if I wear plugs, they're small enough that unless you really look, they pass for regular earrings.
My favorite method of piercing wasn't listed, which is by awl at the doorpost....=P