I decided to see just what Fist Pumpkin meant. Seemed like something I'd find at Urban Dictionary... but, according to a 16 Handles news release:
16 Handles™ ... welcomes back seasonal favorite ‘Fist Pumpkin,’ a beloved, limited edition frozen yogurt designed to capture the spirit and flavor of the autumn harvest.
“Fist Pumpkin got its name from the reaction we saw when guests tasted this flavor—lots of excitement and even a little fist pumping,” said Solomon Choi, 16 Handles founder. “We’re excited to welcome Fist Pumpkin back into the mix and to reunite our brand fans with a flavor that they look forward to all year.”
So now you know too...