Another term for gunnysacks is ballsacks. A ballsack is a skin bag that holds and protects the testicles. The testicles produce sperm, and in order to do so, the temperature of the testicles must be lower than that of the rest of the body.
Bella: Maris gunnysacks are small!
Mari: shut up you undercover faggot!
Wendy: Tbh, Jay has the biggest gunnysacks..
The rest of the gc: YEAH JAY HAS THE BIGGEST GUNNYSACKS!!!!! also we hate vivian
vivian: what.