2. To lie to a girl, when you say you are only going to dip an inch in her, but you end up sinking the whole pecker in.
3. A technique that allows you to go 2.54cms deeper after you go all in (also called drillin').
2. girl: Hey!, didn't you said you where only going to dip the tip?
dude: Come on, I told you it was only an inch. Sorry I forgot telling you it was the magic inch
3. I almost break my rod trying the magic inch, I'll never go deep dicking again.