How do you define your ratings on a 1 to 10 scale?

Why is Signs average

10-7 Must see
6.9-6.5 So so
6.4-6.0 Passable
5.9-5.0 Yuck
4.9-0 Gasp

10 the best that my future self will decide
9 the best i know now/fav of the favs/top of the mountain?
8 v good/my favs/rewatch a lot
7 p good/like :) but not my favs
6 okay but kinda cool "it's okay i guess"
5 okay but kinda shitty/not for me but can see the appeal/kinda dislike
4 p shit/dislike but don't hate
3 v shit/turned off before it was over but got me to watch/mistake/hate
2 the shittiest/so shit i prob will never watch
1 even shittier than i can comprehend

i'm too much of a noob to be givin 10s so nothing gets that yet