Lingster - Tina Toon's Tremendous Transformation - 3D Adult Comic

Tina Toon's ***friend Tom loves girls with muscles, but despite her best efforts in the gym, Tina's not putting on much mass. When Tina complains to her trainer Tiffani, Tiffani reveals the existence of a secret physics project in the gym, which can help hardgainers become fast gainers.
Soon the two women are sneaking downstairs to try out the machine, but unfortunately Tiffani doesn't quite remember how to operate it correctly...