1. to approach a woman, who looked beautiful from a distance, and quickly turn around upon noticing her looks up close
2. to approach a woman, who is beautiful, but upon noticing her 6'8 body builder boyfriend, turn around immediatly
Ex 1: "Damn Jimmy, I had to sike! She was beat."
Ex 2: "I siked once I saw her face."
Ex 3: "I saw noticed this dime walking in the mall so I approached her, but I had to sike because her big ass boyfriend was with her.