a collin
A Collin is a guy who's nice but doesn't say much. He'll back you up but can blow his top if you pester him. You can count on him, but he's not good with words when he's trying to impress someone.
Why'd you pick a fight with Collin? He's the type to let you have it after you annoy him for ten minutes.
Collin said he'd help me move, but he didn't say anything when I tripped over the couch.
He promised to ask me out, but he just looked at me and said 'Okay.'