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1.
Basically means same, but we say sameage cos we're cool.

Invented by Grant :)
Grant: omg i love this song
Sam: samage!
Grant: sameage!!

by Sam Storey February 10, 2008
 
2.
Sameage means you think the same as the person you r talkin to or you like the same things as the person you are talking to.
Georgia - I love my new neon nail varnish!

Sophiee - Sameage!
by Sophiee Baybee April 13, 2009