A large shit often mistaken as a nuclear explosion
Chris: WHOA who pulled a meaghann in the bathroom?
Shakira: Yeah, sorry
mammal; usually short by comparison; always has large breasts; the Meaghann is characterized by a loud, colorful, and charismatic personality; usually has some kind of fixation with cartoons or cartoon characters (ex. X-men, Batman); has extremely addictive tendencies. Guys are fixated on the breasts and girls are jealous of them.
Wow! Look at that Meaghann!!!