You can fool some people sometimes
But you can't fool all the people all the time

from Bob Marley – Get Up, Stand Up Lyrics on Rap Genius

Meaning

Basically if you’re full of shit someone’s gonna notice sooner or later.

Apperently this is a quite popular quote.

To help improve the meaning of these lyrics, visit “Get Up, Stand Up” by Bob Marley Lyrics and leave a comment on the lyrics box