Buff and Butters placed together to make the word buffters.
Means that that person you are saying it to is half buff and half butters
Ha Ha girl you buffters
When a girl is not good looking, but has good proportions such as boobies and ass. A prime example is uhh... Well... You get the point.
"Oh dear god, Look at her! Haha! She's So Buffters!"
"Wow, That's one buffters chick, innit!"