Shlobba McDogga's definitions
RUF is an acronym for Resting Ugly Face. Someone who has RUF is unattractive when emotionless, but is generally pretty when smiling or expressing other emotions.
Guy 1: man, is that your girlfriend? She's ugly man, you could do so much better.
Guy 2: nah man, she just has RUF. Her smile is beautiful.
Guy 2: nah man, she just has RUF. Her smile is beautiful.
by Shlobba McDogga May 15, 2018
Get the RUFmug.