The two lines and the dent formed by them, under ones nose extending to the top of the upper lip.

lil mad is like big mad but the opposite, you mad but not mad to the extent of pullin somthin

The groove in the upper lip

The word philtrum has 2 main meanings:
1: noun. The little groove between the bottom of your nose and your top lip. I have no clue what it is there for, but now you know what it is called.
2: verb. The art of performing oral sex while shaving. This originated because some kid at my school with a dirty mind thought it was 'full trim'. The term has since caught on and is now widely recognised.

The act of giving Phil a haircut.