>>19134009average vaginal mucous contains about five percent protein.
So, in a teaspoon you might have a milligram or two.
During a twenty minute arousal period, you might get five or six tablespoons.
So, let's be generous here and say seven milligrams per tablespoon closer to ovulation where protein levels are higher. That's a total of approximately 42 milligrams of protein.
That's still way under a single gram, so it would be less than a single calorie.
But, suppose the lady is a gusher, lubricates unusually heavy, and had an absurd percentage of protein in her mucous. You'd still be lucky to hit a full gram of protein, for a total of 4 calories.
So, in general you'd be looking at between maybe a half calorie realistically up to four if everything was really strange.
There is a lot more protein in your own cum but I haven't crunched the numbers yet. If you want protein you would be much better off eating the rest of their body, however that is probably illegal unless you live in Somalia or something.
