Lindsay Lohan -- Drops the N-Word, Quickly Deletes It

Lindsay Lohan is about to learn a life lesson ... nothing on the Internet is ever really gone ... because her attempt to delete the N-word from social media has failed miserably.

Lohan went to see Kanye West perform Tuesday night as part of Paris Fashion Week. She posted a photo of Kanye onstage that included the caption, "#kanye&kimAlldaynigga$."

Lindsay deleted the corresponding tweet and edited the Instagram post to remove the N-word ... but her followers noticed and called her out on it, writing things like:

-- "Why did you change what you wrote?"
-- "You said the N word?!? Wow I seen your original post and so did thousands others"
-- "She deleted N word so fast ..... Wow !!"