A female that makes males look like bad guys because she is. She also known to have small breasts. Basically, an evil female with small breasts, or flat chest.
Sam: Sarah made Bob look like a bad guy because she’s evil, and she has small breasts.
Christine: You mean small tits.
The act of having smallnuts. Usually extremely small, or used as an insult to someone. Sometimes used so a supervisor or adult won't understand you are calling someone small nutted.
Look at ya Boi' Travis Ray he's got them Smallnits baby.