I've never sucked off another guy so I dont know for sure if it takes less effort to suck on a smaller dick than a larger dick, but I assume it does.
Say for instance a six inch dick takes 100 hypothetical effort units, and a 12 inch dick takes 200, maybe a thee inch dick takes 50. Reasonably, if it's harder to give the guy head, the guy would get head less often right? If it's easy then he should get head more often.
Maybe it's not a direct linear scaling, maybe there's some sort of step function or curve, maybe a guy with a 3 inch dick doesnt get his dick sucked twice as often as a guy with a 6 inch dick.
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