"Smile with your eyes," as coined by supermodel Tyra Banks on the thirteenth cycle of America's Next Top Model. Ever since its introduction, the term became part of the daily lexicon of Tyra and her minions. The art of smizing is epitomized by the legendary Super Smize.
For more examples of Tyraspeak, see "tension", "H2T", and "Ty-over".
Tyra: You need to smize more in your pho-to.
Erin (C13): "Smize"?
Tyra: Smiling with your eyes.
Erin (C13): Excuse me while I go throuth ("throw up in my mouth").
A Smize Man is someone whose to savage or someone who super smiles. This term can also be used as smize up, if someone was down you would use that term to cheerthe man up or as a good day.