A tricky person with an exterior that seems opening and inviting but when furthering a relationship with, becomes extremely scared to commit. A Collin is known for a wild attitude and is very witty, funny, and down right weird at times. Collin's are entertaining to large audiences and have a natural knack at being good with musical instruments and often sports. Collins tend to be horrible with relationships and are known for blowing it with the girls of their dreams.
Girl 1: "Yeah, he was so cool and now he's just gone."
Girl 2: "Pulled a Collin on you huh?"