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Summary
Gojo isn’t entirely sure this was the best study method he could have come up with, and he hisses as Geto’s tongue stops moving against him as he struggles to remember the answer to the question he had asked.
How do you calculate the mass of the sun?
“N-newton’s law of universal gravitation,” Gojo spits out, hands fisting into Geto’s hair as he waits for that wicked tongue to start moving. It sits still against his clit as Gojo sighs in frustration.
“The equation can be rearranged to solve for the mass of the Sun, M, by canceling the mass of the Earth, m, from both sides, and the orbital radius of the Earth, r.”
Geto accepts this answer, even if it isn’t the full equation, and Gojo whimpers as his tongue begins working against him again. Gojo flips to the next index card.
“How do stars generate energy?” Gojo pants, “Nuclear fusion in their cores. F-fuck.”
Gojo almost drops the index cards as Geto’s fingernails dig into his thighs, and his nose nudges against Gojo’s clit in a teasing manner. Geto’s eyes go dark, and his movements slow the longer Gojo whimpers instead of talks.
KINKTOBER DAY EIGHT: FACESITTING
Series
- Part 8 of Kinktober 2026
- Part 2 of Suguru/Satoru