Meaning a «size dem up»

"Size dem up" means fi evaluate or assess di competition fi see how dem match up against yuh. It involve lookin' at somebody else's strength, talent, or resources and realizin' seh yuh far better or more powerful dan dem. Eena a clash or a rivalry, it's a way a showin' dominance by provin' seh di opponent is too small or weak fi even be eena di same league. It carry a boastful and confident tone, often used by artists fi tell dem fans seh dem have di upper hand.