Yuss is a term used to describe a hot girl who is well below the legal age or is much younger than you. yuss = young puss, yussy= young pussy.
a group of guys who try to score Yuss are known as 'Yuss Hunters'.
Can also be associated with Yick, Yilly, Yock.
Ben "did u see that group of 15 year olds going to the disco?"
John " yeah major YUSS"