1 definition by Big Dog Football Boss

Acronym for "Big Saucy Tits". Refers to extremely nice breasts. Stems from the spelling of breast, containing B, S, and T in that order. Because BST stands for "binary search tree" in computer science, the word "balanced" usually proceeds BST.
Wow, Lindsey's hottest feature is her rack of juicy balanced BSTs.

The second I looked up and saw some massive BSTs, I immediately knew I was staring at Bird's mom's beautiful bosom.
by Big Dog Football Boss October 29, 2013
Get the BST mug.