Marrish is the ship name between Jordan Parrish and Lydia Martin on the MTV show, Teen Wolf - but what it really is, is this guy who is a 24 year old deputy horndog who is actually a dog from hell (Hellhound) having sexual hallucinations about a 17 year old school girl. Oh yeah and he sets himself on fire and carries dead bodies around. Nice one burnt toast.
Conservative to the point of being boring, dull or ugly; usually referring to a manner of dress and/or personality. After the stereotypical school marm.