A word used to express the personality of a friend, acquaintance, celebrity, or any other type of person in an attempt to impersonate them when you know that you can't actually do an accurate impersonation of them.
Used in conjunction with random interjections of statements describing obvious things about the person.
Ryan: MERRR! MY NAME IS JOEL! MERMERMERMER!
Ryan: MERR! MY NAME IS CRISTINA! MERMERMERMER! I ENJOY SEMIFREDDO ICECREAM! MERRR!
Aaron: MERR! I'M SARAH PALIN! I CAN SEE RUSSIA FROM MY HOUSE! MERMERMERMER!