the difference between parody and satire

I've read quite a few posts on this board, mostly by dumb kids saying parody and satire are the same thing. One poster actually calls them synonyms. They aren't and I'll clear it up. Also I should say that this movie is actually quite funny.

Parody is always an imitation, be it of a movie, writer, genre or person... usually exaggerated for comic effect. thats it.

satire can be parody. but satire uses humour (often exaggeration, why it gets confused with parody) or irony to criticize or point out the stupidity of something or someone. It is often used in controversial topics, such as politics (political satire is something everyone has heard of).

Satire often uses humour BUT you can have satire that is not funny or meant to be.

in the movie take the melissa cherry bits. This is both parody and satire...
It is a parody of britney spears, exaggerating her sexual lyrical content and how she portrays her self in overtly sexual ways for comic effect.

It is also satirizes American pop culture. An actually controversial subject like whether or not young children should actually be idolizing a dumb slut like britney spears. it uses humour to expose and criticize this aspect of american culture. Making it satire.