An adjective used to describe a person named Sam who is an all around awesome person and great to be around. He/she makes everyone else around totally jealous, but its ok because they have so much more fun when Sam's there. Generally the life of any party and usually very attractive.
Tim: Dude! Have you met that new girl Sam? She's freakin awesome!
Jack: Yeah, man, she's pretty samazing.
Jessica: Who does that Sam girl think she is? She's always smiling and having so much fun! I can't stand her!
Amanda: Don't hate because she's so much cooler than you. You're just jealous because you'll never be samazing like her.